P. Evans

发表

Dynamic Kinetic Resolution of Alkenyl Cyanohydrins Derived from α,β-Unsaturated Aldehydes: Stereoselective Synthesis of E-Tetrasubstituted Olefins.

M. Baik, Jiyong Park, Jadab Majhi, 2019, Journal of the American Chemical Society.

Regio‐ and Diastereoselective Rhodium‐Catalyzed Allylic Substitution with Unstabilized Benzyl Nucleophiles

P. Evans, Debasis Pal, T. Wright, 2020 .

Regio- and Diastereoselective Rhodium-Catalyzed Allylic Substitution with Unstabilized Benzyl Nucleophiles.

P. Evans, Debasis Pal, T. Wright, 2020, Angewandte Chemie.

A sequential two-component etherification/oxa-conjugate addition reaction: asymmetric synthesis of (+)-leucascandrolide A macrolactone.

W. J. Andrews, P. Evans, P Andrew Evans, 2008, Angewandte Chemie.

Recent Developments in Rhodium-Catalyzed Cyclocarbonylation Reactions

P. Evans, Andrew J Burnie, 2017 .

Stereoselective transition metal-catalysed higher-order carbocyclisation reactions.

P. Evans, P. A. Inglesby, 2010, Chemical Society reviews.

Diastereoselective construction of syn-1,3-dioxanes via a bismuth-mediated two-component hemiacetal/oxa-conjugate addition reaction.

P. Evans, M. Lawler, Aleksandr Grisin, 2012, Journal of the American Chemical Society.

Diastereoselective construction of anti-4,5-disubstituted-1,3-dioxolanes via a bismuth-mediated two-component hemiacetal oxa-conjugate addition of γ-hydroxy-α,β-unsaturated ketones with paraformaldehyde.

P. Evans, J. Bacsa, Aleksandr Grisin, 2015, Chemical communications.

Stereoselective construction of cis-2,6-disubstituted tetrahydropyrans via the reductive etherification of delta-trialkylsilyloxy substituted ketones: total synthesis of (-)-centrolobine.

P. Evans, S. Gharpure, Jian Cui, 2003, Organic letters.

Stereoselective construction of cyclic ethers using a tandem two-component etherification: elucidation of the role of bismuth tribromide.

P. Evans, R. J. Hinkle, S. Gharpure, 2003, Journal of the American Chemical Society.

Stereoselective construction of cis-2,6-disubstituted tetrahydropyrans via an intramolecular bismuth-mediated oxa-conjugate addition reaction.

W. J. Andrews, P. Evans, 2005, Tetrahedron letters.

Synthesis of (+)-Leucascandrolide A Macrolactone

W. J. Andrews, P. Evans, 2009 .

5.14 Higher Order Cycloadditions

P. Evans, P. A. Inglesby, P. Inglesby, 2014 .

Catalytic Enantioselective Alkylation of Prochiral Enolates.

P. Evans, T. Wright, Timothy B. Wright, 2021, Chemical reviews.

A Central Strategy for Converting Natural Products into Fluorescent Probes

M. K. Harper, A. Richardson, C. Ireland, 2006, Chembiochem : a European journal of chemical biology.

Synthesis of Δ12,14-15-deoxy-PG-J1 methyl ester and epi-Δ12-15-deoxy-PG-J1

P. Evans, M. Iqbal, Ying-fa Li, 2004 .

A Concise, Efficient and Scalable Total Synthesis of Thapsigargin and Nortrilobolide from (R)-(-)-Carvone.

P. Evans, Dezhi Chen, 2017, Journal of the American Chemical Society.

Intramolecular Thioether Migration in the Rhodium-Catalyzed Ene-Cycloisomerization of Alkenylidenecyclopropanes by a Metal-Mediated β-Sulfide Elimination.

P. Evans, Yu Su, P. A. Inglesby, 2018, Angewandte Chemie.

Rhodium-catalyzed [(3+2)+1] carbocyclization reactions of alkynylidenecyclopropanes with carbon monoxide: regiospecific construction of polysubstituted phenols.

P. Evans, Andrew J Burnie, D. Negru, 2014, Organic letters.

Computationally designed and experimentally confirmed diastereoselective rhodium-catalyzed Pauson-Khand reaction at room temperature.

M. Baik, P. Evans, S. Mazumder, 2011, Journal of the American Chemical Society.

New methodology for the synthesis of unsaturated 8-, 9- and 10-membered lactams

A. Nadin, P. Evans, A. Holmes, 1996 .

Synthesis of monocyclic medium ring lactams

P. Evans, A. Holmes, K. Russell, 1992 .

The first example of a transoid amide (imide) in an eight-membered lactam

I. Collins, P. Evans, A. Holmes, 1995 .

New synthetic methodology for the synthesis of 7-substituted tetrahydroazepin-2-ones

P. Evans, A. Holmes, K. Russell, 1994 .

Diastereoselective rhodium-catalyzed ene-cycloisomerization reactions of alkenylidenecyclopropanes: total synthesis of (-)-α-kainic acid.

P. Evans, P. A. Inglesby, P. Evans, 2012, Journal of the American Chemical Society.

Stereoselective Synthesis of Dihydropyran-4-ones via a Formal Hetero Diels-Alder Reaction and Ceric Ammonium Nitrate Dehydrogenation.

P. Evans, J. D. Nelson, 1996, The Journal of organic chemistry.

Regioselective preparation of α,β-unsaturated ketones via the direct dehydrogenation of triisopropylsilyl enol ethers

P. Evans, D. Modi, J. Longmire, 1995 .

Diastereoselective metal-catalyzed [4 + 2 + 2] carbocyclization reactions utilizing a rhodium N-heterocyclic carbene (NHC) complex: the first example of a rhodium NHC-catalyzed [m + n + o] carbocyclization.

P. Evans, M. Pink, A. Fazal, 2005, Chemical communications.

DIASTEREOSELECTIVE FORMATION OF CYCLIC ACETALS VIA AN INTRAMOLECULAR FLUORIDE-CATALYZED HETERO-MICHAEL REACTION

P. Evans, L. Garber, 1996 .

Total synthesis of marinomycin A using salicylate as a molecular switch to mediate dimerization.

P. Evans, M. Lawler, Sergio Maroto, 2012, Nature chemistry.

Modern Rhodium-Catalyzed Organic Reactions: EVANS:RHODIUM O-BK

P. Evans, 2005 .

Stereospecific Rhodium-Catalyzed Allylic Substitution with Alkenyl Cyanohydrin Pronucleophiles: Construction of Acyclic Quaternary Substituted α,β-Unsaturated Ketones.

Ben W. H. Turnbull, P. Evans, Samuel Oliver, 2015, Journal of the American Chemical Society.

Transition-Metal-Catalyzed Allylic Substitution Reactions: Stereoselective Construction of α- and β-Substituted Carbonyl Compounds

P. Evans, Samuel Oliver, 2013 .

Regio- and stereoselective functionalisation of monocyclic medium ring lactams

I. Collins, P. Evans, A. Holmes, 1992 .

Diastereoselective Construction of syn-1,3-Dioxanes via a Bismuth-Mediated Two-Component Hemiacetal/Oxa-Conjugate Addition Reaction.

P. Evans, M. Lawler, Aleksandr Grisin, 2012 .

Stereoselective rhodium-catalyzed [3 + 2 + 1] carbocyclization of alkenylidenecyclopropanes with carbon monoxide: theoretical evidence for a trimethylenemethane metallacycle intermediate.

M. Baik, P. Evans, S. Mazumder, 2012, Journal of the American Chemical Society.

Mechanistic insight into the diastereoselective rhodium-catalyzed Pauson-Khand reaction: role of coordination number in stereocontrol.

M. Baik, P. Evans, Huijun Wang, 2008, Angewandte Chemie.

Stereodivergent construction of cyclic ethers by a regioselective and enantiospecific rhodium-catalyzed allylic etherification: total synthesis of gaur acid.

David K. Leahy, W. J. Andrews, P. Evans, 2004, Angewandte Chemie.

Microwave promoted Pauson–Khand reactions

P. Evans, M. Iqbal, Nicola Vyse, 2002 .

Regio- and enantiospecific rhodium-catalyzed allylic substitution with an acyl anion equivalent.

P. Evans, Samuel Oliver, 2013, Organic letters.

Rhodium-catalyzed allylic substitution with an acyl anion equivalent: stereospecific construction of acyclic quaternary carbon stereogenic centers.

P. Evans, Samuel Oliver, J. Chae, 2012, Journal of the American Chemical Society.

Regiodivergent ligand-controlled rhodium-catalyzed [(2+2)+2] carbocyclization reactions with alkyl substituted methyl propiolates.

P. Evans, P. A. Inglesby, J. Sawyer, 2010, Angewandte Chemie.

The isolation and characterization of a rhodacycle intermediate implicated in metal-catalyzed reactions of alkylidenecyclopropanes.

P. Evans, J. Bacsa, P. A. Inglesby, 2014, Angewandte Chemie.

Regio- and diastereoselective tandem rhodium-catalyzed allylic alkylation/Pauson-Khand annulation reactions.

J. E. Robinson, P. Evans, A. Evans, 2001, Journal of the American Chemical Society.

Enantioselective allylic substitution using a novel (phosphino-1,3-oxazine)palladium catalyst

P. Evans, T. Brandt, 1996 .

Temporary Silicon–Tethered Ring–Closing Metathesis Reactions in Natural Product Synthesis

P. Evans, 2010 .

Corrigendum to “Stereoselective construction of the azabicyclic core applicable to the biologically important polyguanidinium alkaloids batzelladine A and D using a free radical cyclization”: [Tetrahedron Lett. 42 (2001) 6637]

P. Evans, T. Manangan, 2005 .

Regioselective rhodium-catalyzed allylic alkylation with a modified Wilkinson's catalyst

P. Evans, J. D. Nelson, 1998 .

Enantioselective construction of C-chiral allylic sulfilimines via the iridium-catalyzed allylic amination with S,S-diphenylsulfilimine: asymmetric synthesis of primary allylic amines

P. Evans, Rebecca L. Grange, E. Clizbe, 2014, Chemical science.

Rhodium-catalyzed propargylic substitution: a divergent approach to propargylic and allenyl sulfonamides.

P. Evans, M. Lawler, 2006, Angewandte Chemie.

Regioselective rhodium-catalyzed allylic alkylation/ring-closing metathesis approach to carbocycles

P. Evans, L. J. Kennedy, P. Evans, 2001 .

Recent Developments in Asymmetric Allylic Amination Reactions

P. Evans, Rebecca L. Grange, E. Clizbe, 2016, Synthesis.

Unlocking ylide reactivity in the metal-catalyzed allylic substitution reaction: stereospecific construction of primary allylic amines with aza-ylides.

P. Evans, E. Clizbe, 2009, Journal of the American Chemical Society.

Regioselective and enantiospecific rhodium-catalyzed allylic amination with thymine: synthesis of a new conformationally rigid nucleoside.

P. Evans, J. Huffman, K. W. Lai, 2006, Chemical communications.

Stereoselective construction of the azabicyclic core applicable to the biologically important polyguanidinium alkaloids batzelladine A and D using a free radical cyclization

P. Evans, T. Manangan, 2001 .

Palladium catalyzed cross-coupling acylation approach to the antitumor antibiotic fredericamycin A

P. Evans, T. Brandt, 1996 .

Regio- and diastereoselective rhodium-catalyzed allylic substitution with acyclic alpha-alkoxy-substituted copper(I) enolates: stereodivergent approach to 2,3,6-trisubstituted dihydropyrans.

P. Evans, M. Lawler, 2004, Journal of the American Chemical Society.

Regioselective and enantiospecific rhodium-catalyzed allylic alkylation reactions using copper(I) enolates: synthesis of (-)-sugiresinol dimethyl ether.

David K. Leahy, P. Evans, 2003, Journal of the American Chemical Society.

Enantioselective total synthesis of the polycyclic guanidine-containing marine alkaloid (-)-batzelladine D.

J. E. Robinson, P. Evans, J. Qin, 2007, Angewandte Chemie.

Rhodium-catalyzed [(3+2)+2] carbocyclization of alkynylidenecyclopropanes with substituted allenes: stereoselective construction of tri- and tetrasubstituted exocyclic olefins.

P. Evans, D. Shang, D. Negru, 2015, Angewandte Chemie.

Modern rhodium-catalyzed organic reactions

P. Evans, J. Tsuji*, 2005 .

Metal-free metathesis reaction of C-chiral allylic sulfilimines with aryl isocyanates: construction of chiral nonracemic allylic isocyanates.

P. Evans, Rebecca L. Grange, 2014, Journal of the American Chemical Society.

Asymmetric dihydroxylation of vinyl sulfones: routes to enantioenriched α-hydroxyaldehydes and the enantioselective syntheses of furan-2(5H)-ones

P. Evans, Mélanie Leffray, 2003 .

Regioselective and enantiospecific rhodium-catalyzed allylic amination with N-(arylsulfonyl)anilines.

P. Evans, K. Moffett, Evans Pa, 2001, Organic letters.

A convenient, economical and scalable multi-gram synthesis of 1-vinylcyclopropyl 4-methylbenzenesulfonate

P. Evans, P. A. Inglesby, O. Ojo, 2014 .

Novel Wagner-Meerwein rearrangement of a bicyclo[3.1.1]heptanol under mitsunobu conditions

P. Evans, A. Rheingold, J. D. Nelson, 1997 .

Rhodium(I)‐Catalyzed Allylic Substitution Reactions and Their Applications to Target Directed Synthesis

David K. Leahy, P. Evans, 2005 .

Enantioselective rhodium-catalyzed allylic substitution with a nitrile anion: construction of acyclic quaternary carbon stereogenic centers.

Ben W. H. Turnbull, P. Evans, 2015, Journal of the American Chemical Society.

Copper-catalyzed desymmetrization of prochiral 4,4-disubstituted cyclopentenes via a site-selective allylic oxidation: a concise total synthesis of untenone A.

P. Evans, T. Wright, A. Dancevic, 2019, Chemical communications.

Hypervalent Iodine Chemistry: New Oxidation Reactions Using the Iodosylbenzene−Trimethylsilyl Azide Reagent Combination. Direct α- and β-Azido Functionalization of Triisopropylsilyl Enol Ethers

C. Hulme, P. Evans, J. Lacour, 1996 .

Asymmetric Rhodium-Catalyzed Allylic Substitution Reactions: Discovery, Development and Applications to Target-Directed Synthesis.

Ben W. H. Turnbull, P. Evans, P. Evans, 2018, The Journal of organic chemistry.

Enantioselective Rhodium-Catalyzed Allylic Alkylation of Prochiral α,α-Disubstituted Aldehyde Enolates for the Construction of Acyclic Quaternary Stereogenic Centers.

P. Evans, T. Wright, P. Evans, 2016, Journal of the American Chemical Society.

Enantioselective rhodium-catalyzed allylic alkylation of acyclic α-alkoxy substituted ketones using a chiral monodentate phosphite ligand

P. Evans, M. Lawler, Samuel Oliver, 2012 .

Preparation and Palladium Mediated Cross-Coupling Reactions of cis-2,3-Disubstituted 5-Halo-Dihydropyran-4-ones

P. Evans, J. D. Nelson, T. Manangan, 1997 .

Regio- and enantioselective intermolecular rhodium-catalyzed [2+2+2] carbocyclization reactions of 1,6-enynes with methyl arylpropiolates.

P. Evans, K. W. Lai, J. Sawyer, 2005, Journal of the American Chemical Society.

Regio- and stereospecific rhodium-catalyzed allylic alkylation with an acyl anion equivalent: an approach to acyclic α-ternary β,γ-unsaturated aryl ketones

Ben W. H. Turnbull, P. Evans, Samuel Oliver, 2017, Chemical science.

Intermolecular rhodium-catalyzed [3+2+2] carbocyclization of alkenylidenecyclopropanes with activated alkynes: regio- and diastereoselective construction of cis-fused bicycloheptadienes.

P. Evans, P. A. Inglesby, 2008, Journal of the American Chemical Society.

ENANTIOSPECIFIC SYNTHESIS OF ALLYLAMINES VIA THE REGIOSELECTIVE RHODIUM-CATALYZED ALLYLIC AMINATION REACTION

P. Evans, A. J. Robinson, J. D. Nelson, 1999 .

Regioselective Rhodium‐Catalyzed Allylic Alkylation with a Modified Wilkinson′s Catalyst.

P. Evans, J. D. Nelson, 1998 .

Enantioselective total synthesis of the potent antitumor agent (-)-mucocin using a temporary silicon-tethered ring-closing metathesis cross-coupling reaction.

P. Evans, S. Gharpure, Jian Cui, 2003, Journal of the American Chemical Society.

Vinylogous sulfonates as radical acceptors for the stereoselective synthesis of cyclic ethers

P. Evans, T. Manangan, 1997 .

An Iterative Approach to Biologically Important Fused Polycyclic Ethers via Acyl Radical Cyclizations

P. Evans, L. Garber, and Jamie D. Roseman, 1996 .

Stereodivergent construction of cyclic ethers by a regioselective and enantiospecific rhodium-catalyzed allylic etherification: total synthesis of gaur acid.

David K. Leahy, W. J. Andrews, P. Evans, 2004, Angewandte Chemie.

Regioselective preparation of α-nitro cyclohexyl triisopropylsilyl enol ethers

P. Evans, J. Longmire, 1994 .

Regio- and enantiospecific rhodium-catalyzed arylation of unsymmetrical fluorinated acyclic allylic carbonates: inversion of absolute configuration.

P. Evans, D. Uraguchi, P. Evans, 2003, Journal of the American Chemical Society.

Stereoselective synthesis of cis-2,5-disubstituted tetrahydrofuran-3-ones via an acyl radical cyclization

P. Evans, J. Roseman, 1995 .

Regioselective and Stereospecific Rhodium-Catalyzed Allylic Cyanomethylation with an Acetonitrile Equivalent: Construction of Acyclic β-Quaternary Stereogenic Nitriles.

P. Evans, Mai-Jan Tom, P. Evans, 2020, Journal of the American Chemical Society.

A Concise and Modular Three-Step Synthesis of (S)-Verapamil using an Enantioselective Rhodium-Catalyzed Allylic Alkylation Reaction

Ben W. H. Turnbull, P. Evans, Mai-Jan Tom, 2020, Synthesis.

Conjugate addition–Peterson olefination reactions: expedient routes to cross conjugated dienones

P. Evans, M. Iqbal, 2003 .

Regio- and enantiospecific rhodium-catalyzed allylic etherification reactions using copper(I) alkoxides: influence of the copper halide salt on selectivity.

David K. Leahy, P. Evans, 2002, Journal of the American Chemical Society.

Intermolecular rhodium-catalyzed [2+2+2] carbocyclization reactions of 1,6-enynes with symmetrical and unsymmetrical alkynes.

P. Evans, J. Huffman, K. W. Lai, 2005, Chemical communications.

Intermolecular Rhodium-Catalyzed [2 + 2 +2] Carbocyclization Reactions of 1,6-Enynes with Symmetrical and Unsymmetrical Alkynes.

P. Evans, J. Huffman, K. W. Lai, 2005 .

Diastereoselective Rhodium‐Catalyzed [(3+2+2)] Carbocyclization Reactions with Tethered Alkynylidenecyclopropanes: Synthesis of the Tremulane Sesquiterpene Natural Products

M. Baik, Jadab Majhi, P. Evans, 2021 .

Intramolecular Rhodium-Catalyzed [(3+2+2)] Carbocyclization Reactions with Dienylidenecyclopropanes: A Concise and Stereoselective Total Synthesis of the Sesquiterpene (+)-Zizaene.

P. Evans, Yu Zhu, Jie Zheng, 2023, Journal of the American Chemical Society.

Photo‐Induced Ring Expansion of 1‐Triisopropylsilyloxy‐1‐Azidocyclohexane: Preparation of ε‐Caprolactam

P. Evans, D. Modi, J. D. Nelson, 2003 .

Applications of the β-Azidonation Reaction to Organic Synthesis. α,β-Enones, Conjugate Addition, and γ-Lactam Annulation

P. Evans, J. Lacour, P. Rigollier, 1998 .

A concise total synthesis of pyrovellerolactone using a rhodium-catalyzed [(3 + 2) + 2] carbocyclization reaction.

P. Evans, P. A. Inglesby, K. Kilbride, 2013, Organic letters.

Diastereoselective intermolecular rhodium-catalyzed [4 + 2 + 2] carbocyclization reactions: computational and experimental evidence for the intermediacy of an alternative metallacycle intermediate.

M. Baik, P. Evans, Erich W. Baum, 2005, Journal of the American Chemical Society.

Diastereoselective temporary silicon-tethered ring-closing-metathesis reactions with prochiral alcohols: a new approach to long-range asymmetric induction.

P. Evans, Jian Cui, Gerald P. Buffone, 2003, Angewandte Chemie.

Stereoselective construction of cis-2,6-disubstituted tetrahydropyrans via an intramolecular bismuth-mediated oxa-conjugate addition reaction.

W. J. Andrews, P. Evans, 2005, Tetrahedron Letters.

Halide ion effects in the rhodium-catalyzed allylic substitution reaction using copper(I) alkoxides and enolates

David K. Leahy, P. Evans, Laura M. Slieker, 2003 .

Regioselective rhodium-catalyzed allylic linchpin cross-coupling reactions: diastereospecific construction of anti-1,3-carbon stereogenic centers and C(2)-symmetrical fragments.

P. Evans, L. J. Kennedy, 2001, Journal of the American Chemical Society.

Enantiospecific Synthesis of Allylamines via the Regioselective Rhodium-Catalyzed Allylic Amination Reaction [J. Am. Chem. Soc. 1999, 121, 6761−6762].

P. Evans, A. J. Robinson, J. D. Nelson, 1999 .

Enantioselective Rhodium-Catalyzed Allylic Alkylation of β,γ-Unsaturated α-Amino Nitriles: Synthetic Homoenolate Equivalents.

Ben W. H. Turnbull, P. Evans, T. Wright, 2019, Angewandte Chemie.

Rhodium-catalyzed [(3+2)+1] carbocyclizations of alkynylidenecyclopropanes with carbon monoxide: construction of polysubstituted bicyclohexa-2,5-dienones.

P. Evans, Andrew J Burnie, 2018, Chemical communications.

Intermolecular transition metal-catalyzed [4 + 2 + 2] cycloaddition reactions: A new approach to the construction of eight-membered rings

J. E. Robinson, P. Evans, A. Fazal, 2002 .

Temporary Silicon-Tethered Ring-Closing Metathesis Approach to C(2)-Symmetrical 1,4-Diols: Asymmetric Synthesis of D-Altritol.

P. Evans, V. S. Murthy, 1998, The Journal of organic chemistry.

Enantioselective Rhodium-Catalyzed Allylic Alkylation of β,γ-Unsaturated α-Amino Nitriles: Synthetic Homoenolate Equivalents.

Ben W. H. Turnbull, P. Evans, T. Wright, 2019, Angewandte Chemie.

Stereoselective synthesis of the 2,6-disubstituted tetrahydropyran-3-ol of the potent antitumor agent mucocin via an acyl radical cyclization

P. Evans, J. Roseman, 1997 .

Diastereoselective intramolecular temporary silicon-tethered rhodium-catalyzed [4+2+2] cycloisomerization reactions: regiospecific incorporation of substituted 1,3-butadienes.

P. Evans, Erich W. Baum, 2004, Journal of the American Chemical Society.

Intermolecular transition metal-catalyzed [4 + 2 + 2] cycloaddition reactions: a new approach to the construction of eight-membered rings.

J. E. Robinson, P. Evans, A. Fazal, 2003, Journal of the American Chemical Society.

Synthesis of homochiral unsaturated seven-membered lactams

P. Evans, A. Holmes, K. Russell, 1990 .

Synthesis of Homochiral Unsaturated Seven-Membered Lactams.

P. Evans, A. Holmes, K. Russell, 1990 .

Stereoselective transition metal-catalysed higher-order carbocyclisation reactions.

P. Evans, P. Inglesby, 2010, Chemical Society reviews.

Rhodium-catalyzed [(3+2)+2] carbocyclization of alkynylidenecyclopropanes with substituted allenes: stereoselective construction of tri- and tetrasubstituted exocyclic olefins.

P. Evans, D. Shang, D. Negru, 2015, Angewandte Chemie.

Enantioselective Total Synthesis of the Nonisoprenoid Sesquiterpene (-)-Kumausallene.

P. Evans, A. Rheingold, Evans, 1999, Angewandte Chemie.

Stereoselective rhodium-catalyzed [(3+2)+2] carbocyclization reaction of trialkoxysilyl-substituted alkenylidenecyclopropanes with monosubstituted alkynes

P. Evans, Tomass Baikstis, P. Inglesby, 2013 .

Intramolecular addition of acyl radicals to α-substituted vinylogous carbonates: demonstrating the effect of ring size on acyclic stereocontrolElectronic supplementary information (ESI) available: spectral data (IR, 1H and 13C NMR) and high resolution MS for 1/2a-c, 7–10. See http://www.rsc.org/supp

P. Evans, K. Ahsan, S. Raina, 2001 .