A new route to synthesis of substituted pyrazoles through oxidative [3+2] cycloaddition of electron deficient alkenes and diazocarbonyl compounds

[1]  Atul Kumar,et al.  Copper-catalyzed decarboxylative regioselective synthesis of 1,5-disubstituted 1,2,3-triazoles. , 2018, Chemical communications.

[2]  Shamsuzzaman,et al.  Review: biologically active pyrazole derivatives , 2017 .

[3]  Y. Shao,et al.  [3 + 2] cycloaddition and subsequent oxidative dehydrogenation between alkenes and diazo compounds: a simple and direct approach to pyrazoles using TBAI/TBHP. , 2016, Organic & biomolecular chemistry.

[4]  I. Namboothiri,et al.  Regioselective synthesis of pyrazole and pyridazine esters from chalcones and α-diazo-β-ketoesters , 2016 .

[5]  R. Sasikala,et al.  A tunable route to oxidative and eliminative [3+2] cycloadditions of organic azides with nitroolefins: CuO nanoparticles catalyzed synthesis of 1,2,3-triazoles under solvent-free condition , 2016 .

[6]  C. Fahrni,et al.  Fluorogenic Strain-Promoted Alkyne-Diazo Cycloadditions. , 2015, Chemistry.

[7]  S. Sadik,et al.  A new paradigm of copper oxide nanoparticles catalyzed reactions: synthesis of 1,2,3-triazoles through oxidative azide-olefin cycloaddition , 2015 .

[8]  Jun‐An Ma,et al.  Regioselective cycloaddition of trifluorodiazoethane with electron-deficient allenic esters and ketones: access to CF3-substituted pyrazolines and pyrazoles. , 2014, Organic letters.

[9]  I. Namboothiri,et al.  Reactions of vinyl sulfone with α-diazo-β-ketosulfone and Bestmann–Ohira reagent for the regioselective synthesis of highly functionalized pyrazoles , 2014 .

[10]  Wenteng Chen,et al.  One-pot three-component approach to the synthesis of polyfunctional pyrazoles. , 2013, Organic letters.

[11]  W. Zhang,et al.  DABCO-promoted synthesis of pyrazoles from tosylhydrazones and nitroalkenes. , 2013, Organic & biomolecular chemistry.

[12]  Lei Wang,et al.  Highly regioselective organocatalyzed synthesis of pyrazoles from diazoacetates and carbonyl compounds. , 2013, Chemistry.

[13]  Xuesen Fan,et al.  Synthesis of 3,5-disubstituted pyrazoles via cyclocondensation of 1,2-allenic ketones with hydrazines: application to the synthesis of 5-(5-methyl-pyrazol-3-yl)-2′-deoxycytidine , 2012 .

[14]  P. L. McCormack.  Celecoxib , 2011, Drugs.

[15]  A. Schmidt,et al.  Recent Advances in the Chemistry of Pyrazoles. Part 2. Reactions and N-Heterocyclic Carbenes of Pyrazole , 2011 .

[16]  M. Smietana,et al.  Regioselective Synthesis of 3‐Carbo‐5‐phosphonylpyrazoles through a One‐Pot Claisen–Schmidt/1,3‐Dipolar Cycloaddition/Oxidation Sequence , 2011 .

[17]  S. Mobin,et al.  Highly selective synthesis of pyrazole and spiropyrazoline phosphonates via base-assisted reaction of the Bestmann-Ohira reagent with enones. , 2011, The Journal of organic chemistry.

[18]  Takashi Okitsu,et al.  Reagent-controlled oxidative aromatization in iodocyclization: switchable access to dihydropyrazoles and pyrazoles. , 2010, Organic letters.

[19]  M. Smietana,et al.  Three-component reaction using the Bestmann-Ohira reagent: a regioselective synthesis of phosphonyl pyrazole rings. , 2010, Angewandte Chemie.

[20]  I. Namboothiri,et al.  Phosphonylpyrazoles from Bestmann-Ohira reagent and nitroalkenes: synthesis and dynamic NMR studies. , 2010, The Journal of organic chemistry.

[21]  M. Shi,et al.  1,3-Dipolar cycloaddition reactions of vinylidenecyclopropane-diesters with aromatic diazomethanes generated in situ. , 2010, The Journal of organic chemistry.

[22]  Zheng Wang,et al.  Efficient method for the synthesis of functionalized pyrazoles by catalyst-free one-pot tandem reaction of nitroalkenes with ethyl diazoacetate. , 2009, Organic & biomolecular chemistry.

[23]  S. Heymsfield,et al.  Cannabinoid-1 receptor inverse agonists: current understanding of mechanism of action and unanswered questions , 2009, International Journal of Obesity.

[24]  M. Halcrow.  Pyrazoles and pyrazolides-flexible synthons in self-assembly. , 2009, Dalton transactions.

[25]  J. Legros,et al.  Synthesis of pyrazoles through catalyst-free cycloaddition of diazo compounds to alkynes , 2009 .

[26]  J. Ready,et al.  Copper-promoted cycloaddition of diazocarbonyl compounds and acetylides. , 2007, Angewandte Chemie.

[27]  S. Mobin,et al.  Base-mediated reaction of the Bestmann-Ohira reagent with nitroalkenes for the regioselective synthesis of phosphonylpyrazoles. , 2007, Organic letters.

[28]  Peter J. Dunn,et al.  The Chemical Development of the Commercial Route to Sildenafil: A Case History , 2000 .

[29]  E. Rüther,et al.  Sleep latency is shortened during 4 weeks of treatment with zaleplon, a novel nonbenzodiazepine hypnotic. Zaleplon Clinical Study Group. , 1999, The Journal of clinical psychiatry.