J. Hepworth

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Chapter 6.4 Six-membered ring systems: With O and/or S atoms

B. M. Heron, J. Hepworth, B. Heron, 2005 .

Six-Membered Ring Systems

B. M. Heron, J. Hepworth, B. Heron, 2011 .

Chapter 6.4 (2006): Six-membered ring systems: with O and/or S atoms

B. M. Heron, J. Hepworth, 2009 .

Enamino ketones as precursors of functionalised 2H-thiopyrans and thiopyrano[2,3-c]- and [3,2-b]-benzothiopyrans

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1992 .

Determination of the fluorescence quantum yields of some 2-substituted benzothiazoles

J. Hepworth, Robert G. Brown, G. Kirkbright, 1984 .

Photochromism of some thienobenzopyrans

C. D. Gabbutt, B. M. Heron, J. Hepworth, 2000 .

Synthesis and Photochromic Properties of Methoxy Substituted 2,2-Diaryl-2H-naphtho[1,2-b]pyrans

C. D. Gabbutt, B. M. Heron, C. Kilner, 2004 .

Functions Incorporating a Chalcogen and a Group 15 Element

C. D. Gabbutt, J. Hepworth, C. Gabbutt, 1996 .

A kinetic study of the hydrolysis of crystal violet and some terminal and bridged analogues

J. Hepworth, D. Mason, S. Beach, 1999 .

The effects of cyclic terminal groups in 4-aminoazobenzene and related azo dyes. Part 3. Electronic absorption spectra of some monoazo dyes derived from N-phenylmorpholine, N-(phenyl)thiomorpholine, N-(phenyl)thiomorpholine 1,1-dioxide, and N-acetyl-N′-phenylpiperazine

J. Hepworth, R. Marsden, G. Hallas, 1986 .

The Effects of Cyclic Terminal Groups in 4-Aminoazo-benzene and Related Azo Dyes: Part 2—pKa Values of Some Monoazo Dyes Derived from

J. Hepworth, R. Marsden, G. Hallas, 1985 .

Synthesis and reactions of some chloro-2,2-dimethylchromens

J. Hepworth, R. Livingstone, Terry K. Jones, 1981 .

Steric and Electronic Effects in Basic Dyes. I—Electronic Absorption Spectra of Derivatives of Malachite Green Containing Trifluoromethyl Groups in the Phenyl Ring

J. Hepworth, G. Hallas, D. E. Grocock, 2008 .

Reactions of some 2H-Chromenes and 2H-Thiochromenes with triazolinediones

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1995 .

Bromination of 3-amino- and 3-dimethylamino-pyridine

G. J. Fox, J. Hepworth, G. Hallas, 1973 .

Synthesis and photochromic properties of some fluorine-containing naphthopyrans

T. Gelbrich, M. Hursthouse, C. D. Gabbutt, 2002 .

Pyrans and their Benzo Derivatives - Synthesis

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1996 .

SYNTHESIS AND CONJUGATE ADDITIONS OF 2,3,4,9-TETRAHYDRO-1H-XANTHENE-1,9-DIONES

C. D. Gabbutt, J. Hepworth, M. Urquhart, 1997 .

Thiopyrans and their Benzo Derivatives

B. M. Heron, J. Hepworth, B. Heron, 2008 .

2.22 – Pyrans and Fused Pyrans: (i) Structure

C. D. Gabbutt, J. Hepworth, P. Brogden, 1984 .

Chapter 6.4 Six-membered ring systems

B. M. Heron, J. Hepworth, B. Heron, 1998 .

Synthesis of tertiary 1-naphthylamines via the enamine

M. Wainwright, J. Hepworth, S. Guinot, 1998 .

Structural studies of a novel heterocyclic phosphorane

Alan M. Jones, C. D. Gabbutt, B. M. Heron, 1998 .

Chapter 2 – Synthesis and photochromic properties of naphthopyrans

B. M. Heron, J. Hepworth, 2005 .

2.24 – Pyrans and Fused Pyrans: (iii) Synthesis and Applications

J. Hepworth, J. D. Hepworth, 1984 .

Pyrans and their Benzo Derivatives - Structure

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1996 .

Extended conjugation in di- and tri-arylmethane dyes. Part 4. Steric and electronic effects in analogues of Malachite Green containing a 2H-1-benzopyran unit

M. Wainwright, J. Hepworth, S. Guinot, 2000 .

Dyes containing fluorine—I: Electronic absorption spectrum of 2,3,4,5,6-pentafluoro malachite green and the electronic effect of the pentafluorophenyl group

Alan M. Jones, J. Hepworth, G. Hallas, 1972 .

Synthesis and reactivity of some 4-bromo- 2H-chromenes and 2H-thiochromenes

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1994 .

Expedient syntheses of the rotenoid and thiorotenoid systems

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1994 .

A facile route to pyrroles, isoindoles and hetero fused analogues

C. D. Gabbutt, B. M. Heron, J. Hepworth, 2002 .

A new reaction of α-chloro-α-chlorosulfenyl ketones: facile syntheses of 3,3-dichloro- and 3-chloro-chroman-4-ones and thiochroman-4-ones

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1994 .

Ring contraction of sulfenamides derived from thiochroman-4-ones

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1994 .

Synthesis and reactivity of some thiochroman-3,4-diones

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1994 .

Direct aromatic tert-butylation during the synthesis of thiochroman-4-ones

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1993 .

Synthesis of the 5-thiorotenoid system from thiochroman-3-one

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1992 .

An unusual ring expansion from the Zav’yalov pyrrole synthesis: formation of oxacino[2,3-c]pyrroles

C. D. Gabbutt, B. M. Heron, W. Clegg, 1999 .

The electronic absorption spectra of morpholine green and some derivatives22This paper is considered to be Part 15 of our work on TPM dyes. Part 14. Brown, A.T. & Hallas, G., J. Chem. Soc. Perkin Trans., 2 (1982) 1037.

J. Hepworth, J. Sawyer, G. Hallas, 1993 .

Red Colouring Photochromic 6′-Substituted Spiroindolinon Aphth[2,1-b][1,4]Oxazines

C. D. Gabbutt, J. Hepworth, S. D. Marsden, 1994 .

Nuclear magnetic resonance and the conformation of some derivatives of Michler's ketone

K. Bartle, J. Hepworth, G. Hallas, 1975 .

Extended conjugation in di- and tri-arylmethane dyes. Part 5. Vinylogues and ethynologues of Victoria Blue ☆

M. Wainwright, J. Hepworth, S. Guinot, 2000 .

The effects of cyclic terminal groups in di- and tri-arylmethane dyes. Part 2.1 Steric and electronic effects in derivatives of Victoria Blue

M. Wainwright, J. Hepworth, S. Guinot, 1998 .

Directed lithiation of some chroman-4-ols

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1994 .

An NMR study of some substituted 1,3‐ and 1,4‐bistrifluoromethylbenzenes

K. Bartle, J. Hepworth, G. Hallas, 1973 .

Metallation of 1,3-bistrifluoromethylbenzene and NN-dimethyl-3,5-bistrifluoromethylaniline

J. Hepworth, G. Hallas, D. E. Grocock, 1971 .

Chapter 3 – Photochromic naphthopyrans

John D. Hepworth, B. Mark Heron, B. M. Heron, 2006 .

The directed lithiation of some 3-acylchromone acetals

D. Hibbs, M. Hursthouse, C. D. Gabbutt, 1998 .

Chapter 5.4 - Six-Membered Ring Systems: With O and/or S Atoms

J. Hepworth, 1990 .

Femtosecond fluorescence studies of two-dimensional dynamics in photoexcited Michler's ketones

E. V. Veldhoven, W. Rettig, Hong Zhang, 2002 .

Conjugate additions of lithium dialkynylcuprates [(RCC)2CuLi] to activated chromones. Unexpected formation of the 6H-bis[1]benzopyrano[2,3-b:3′,4′-e]pyridine system

M. Hursthouse, C. D. Gabbutt, B. M. Heron, 2003 .

Extended conjugation in di- and tri- arylmethane dyes. Part 3. The effects of increased planarity in Victoria Blue dyes

M. Wainwright, J. Hepworth, S. Guinot, 1999 .

Synthesis of 3-alkenyl-2-arylchromones and 2,3-dialkenylchromones via acid-catalysed retro-Michael ring opening of 3-acylchroman-4-ones

C. D. Gabbutt, B. M. Heron, J. Hepworth, 2005 .

Acid catalysed rearrangements of 1-hydroxy-2,3,4,4a-tetrahydro-9H-xanthen-9-ones: synthesis and cycloaddition reactions of 3,4-dihydro-9H-xanthen-9-ones

C. D. Gabbutt, J. Hepworth, M. Urquhart, 1998 .

Allenes from 3-bromo-2H-1-benzopyrans

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1994 .

Solid-state fluorescent photophysics of some 2-substituted benzothiazoles

J. Hepworth, Robert G. Brown, Kevin. Anthony, 1985 .

Synthesis and spectroscopic properties of some merocyanine dyes

C. D. Gabbutt, B. M. Heron, J. Hepworth, 2001 .

The effects of cyclic terminal groups on the electronic absorption spectra of di- and tri-phenylmethane dyes

J. Hepworth, J. Sawyer, G. Hallas, 1989 .

The effects of cyclic terminal groups in di- and tri-arylmethane dyes. Part 3. Consequences of unsymmetrical substitution in Malachite Green

J. Hepworth, D. Mason, S. A. Gorman, 2000 .

The inhibition of triphenylmethane primary dye fading in carbonless copying paper systems by singlet oxygen quenching bis(dithiocarbamato)nickel(II) complexes

J. Hepworth, Robert G. Brown, M. Caine, 2002 .

Dipole moments of methyl- and trifluoromethyl-substituted methyl benzoates

J. Hepworth, G. Hallas, D. E. Thornton, 1976 .

An NMR investigation of the merocyanine dyes generated by protolysis of some novel spironaphthopyranoindoles

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1999 .

Protolysis of Spironaphtho(aza)pyranoindoles

C. D. Gabbutt, B. M. Heron, J. Hepworth, 2000 .

Aminoacetone Semicarbazone Hydrochloride

J. Hepworth, 2003 .

Synthesis of some thiochromeno[4,3-c]- and [3,4-c]-pyrazoles

S. Coles, M. Hursthouse, C. D. Gabbutt, 2000 .

Synthesis of Some Thiochromeno[4,3‐c]‐ and [3,4‐c]‐pyrazoles.

S. Coles, M. Hursthouse, C. D. Gabbutt, 2000 .

Synthesis of 3-alkenylchromones from chroman-4-ones

C. D. Gabbutt, J. Hepworth, 1985 .

Synthesis and reactivity of some 3,4-dibromo-2H-[1]benzopyrans: The generation and reactions of 3,4-didehydro-2H-[1]benzopyran

S. Coles, M. Hursthouse, C. D. Gabbutt, 1999 .

The generation and reactions of 3,4-didehydro-2H-[1]benzopyran, a highly strained heterocycle

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1996 .

Six‐Membered Ring Systems: With O and/or S Atoms

B. M. Heron, J. Hepworth, 2010 .

Synthesis and cycloadditions of 9H-furo [3,4-b][1]benzo(thio)pyran-9-ones: furan ring formation by a novel hydrolytically induced cycloreversion

D. Hibbs, M. Hursthouse, C. D. Gabbutt, 2002 .

The oxidative ring expansion of spiro-annulated chroman-4-ones: Syntheses of the rotenoid core and related benzoxanthones

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1998 .

The influence of singlet oxygen in the fading of carbonless copy paper primary dyes on clays

J. Hepworth, Robert G. Brown, M. Caine, 2001 .

The hydrolysis of brilliant green and some derivatives. I. A kinetic and equilibrium study of the hydrolysis of brilliant green

J. Hepworth, G. Hallas, D. Mason, 2007 .

An investigation of the electronic spectral properties of the coloured photoproducts derived from some photochromic naphtho[2,1-b]pyrans

Shirley E. Rae, C. D. Gabbutt, Robert Michael Christie, 1997 .

A novel acylative ring cleavage of benzothieno[3,2-b]pyran-4-ols: application to the synthesis of dibenzothiophenes and fused-ring derivatives

C. D. Gabbutt, B. M. Heron, J. Hepworth, 1999 .

Dipole moments of derivatives of 4-phenylazo-NN-diethylaniline and of 9-phenylazojulolidine (9-phenylazo-2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizine)

Alan M. Jones, J. Hepworth, N. Saadatjou, 1981 .

The Synthesis and Fluorescence of Novel N‐Substituted‐1,8‐naphthylimides.

J. Hepworth, Robert G. Brown, J. Tyman, 2008 .

The synthesis and fluorescence of novel N‐substituted‐1,8‐naphthylimides

J. Hepworth, Robert G. Brown, J. Tyman, 2008 .

The Effects of Cyclic Terminal Groups in 4-Aminoazobenzene and Related Azo Dyes.

J. Hepworth, R. Marsden, G. Hallas, 1986 .

Chapter 5.4 - Six-Membered Ring Systems: With O and/or S Atoms

J. Hepworth, 1990 .