Richard Bowen

Professor of Organic Chemistry

Area: School of Chemistry & BiosciencesFaculty of Life Sciences
E-mail: R.D.Bowen@bradford.ac.uk
Phone: +441274233774

52 publications

Publications

Peer reviewed journal (52)

Predictability of Isostructurality within Monosubstituted Cinnamide Crystals
Colin C. Seaton;Nathan W. Fenwick;Amie Saidykhan;Richard Telford;Richard D. Bowen (2025) Crystal Growth and Design.
Steric Effects of N-Alkyl Group on the Base-Induced Nitrogen to Carbon Rearrangement of Orthogonally Protected N-Alkyl Arylsulphonamides
Amie Saidykhan;Janessa Ebert;Nathan W. Fenwick;William H C Martin;Richard Bowen (2025) Molecules.
Crystal or Glass? Chemical and Crystallographic Factors in the Amorphization of Molecular Materials
Nathan W. Fenwick;Richard Telford;Richard D. Bowen;Colin C. Seaton (2024) Crystal Growth and Design. 24, 1124-1135.
The anticancer/cytotoxic effect of a novel gallic acid derivative in non-small cell lung carcinoma A549 cells and peripheral blood mononuclear cells from healthy individuals and lung cancer patients.
Jafarinejad S;Martin WHC;Ras BA;Isreb M;Jacob B;Aziz A;Adoul Z;Lagnado R;Bowen RD;Najafzadeh M; (2023) BioFactors.
Detection and characterisation of oxocyclohexan[b]indoles by combined application of vibrational spectroscopy and mass spectrometry
amie saidykhan;William Martin;richard gallagher;Kohn Kendrick;Richard Bowen (2023) Journal of Molecular Structure. 1294
Hammett Correlation in Competition Experiments in Dissociation of Ionised Substituted Benzophenones and Dibenzylideneacetones
Fenwick, NW; Telford, R; Martin, WHC; Bowen, RD (2023) European Journal of Mass Spectrometry. 29
Hammett Correlation in Competing Fragmentations of Ionized 2-Substituted Benzanilides generated by Electron Ionization Mass Spectrometry
Fenwick NW, Telford R, Martin WHC, Bowen RD (2022) European Journal of Organic Chemistry. 2022
Proximity Effects in Mass Spectra of Benzanilides.
Fenwick, NW; Saidykhan A; Nazir, Y; Telford, R;Masood, B; Martin, WHC; Gallagher, RT;Bowen, RD (2021) European Journal of Mass Spectrometry. 27
Isostructurality of quinoxaline crystal phases: The interplay of weak hydrogen bonds and halogen bonding
Saidykhan A.;Fenwick N.W.;Bowen R.D.;Telford R.;Seaton C.C. (2021) CrystEngComm. 23, 7108-7117.
Hammett Correlation in the Accelerated Formation of 2,3-Diphenylquinoxalines in Nebulizer Microdroplets.
Fenwick NW;Telford R;Saidykhan A;Martin WHC;Bowen RD; (2021) Molecules. 26
Experimental and computational evidence for C=O π-bonding in [CH
2
OH]⁺ and related oxonium ions
Bowen R.;Martin W.;Hudson C.;McAdoo D. (2020) European Journal of Mass Spectrometry.
Structure reactivity relationship in the accelerated formation of 2,3-diarylquinoxalines in the microdroplets of a nebuliser.
Hayat N;Fenwick NW;Saidykhan A;Telford R;Martin WH;Gallagher RT;Bowen RD; (2019) European Journal of Mass Spectrometry. 25
Accelerated generation of (protonated) imines and quinoxalines by formation of C=N bonds in the microdroplets of a nebuliser
Saidykhan A.;Nazir Y.;Martin W.;Gallagher R.;Bowen R. (2018) European Journal of Mass Spectrometry. 24, 3-11.
The scope and regioselectivity of intramolecular N-C rearrangements of orthogonally protected sulfonamides, including cyclization to saccharin derivatives
Saidykhan A.;Ebert J.;Ally H.;Gallagher R.;Martin W.;Bowen R. (2017) Tetrahedron Letters. 58, 3089-3091.
The mechanism of alkene elimination from protonated toluenesulphonamides generated by electrospray ionisation
Saidykhan A.;Ebert J.;Martin W.;Gallagher R.;Bowen R. (2016) European Journal of Mass Spectrometry. 22, 165-173.
Application of positive mode atmospheric chemical ionisation to distinguish epimeric oleanolic and ursolic acids
Townley C.;Brettell R.;Bowen R.;Gallagher R.;Martin W. (2015) European Mass Spectrometry. 21, 433-442.
Intramolecular NC rearrangements involving sulfonamide protecting groups
Saidykhan A.;Bowen R.;Gallagher R.;Martin W. (2015) Tetrahedron Letters. 56, 66-68.
Novel formation of [2M-H](+) species in positive electrospray mass spectra of indoles
Saidykhan, Amie; Ayrton, Stephen T.; Gallagher, R.T.; Martin, William H.C.; Bowen, Richard D. (2014)
Novel formation of [2M-H]⁺species in positive electrospray mass spectra of indoles
Saidykhan A.;Ayrton S.;Gallagher R.;Martin W.;Bowen R. (2014) Rapid Communications In Mass Spectrometry. 28, 1948-1952.
Mass spectra of halogenostyrylbenzoxazoles
Ayrton, Stephen T.; Panova, Jekaterina; Michalik, Adam R.; Martin, William H.C.; Gallagher, R.T.; Bowen, Richard D. (2013) International Journal of Mass Spectrometry. 345-347
Novel nitrogen to carbon rearrangement forming nicotinic acid sulfonamides
Rushingwa E.;Touray H.;Bowen R.;Gallagher R.;Martin W. (2013) Tetrahedron Letters. 54, 4726-4728.
Influence of a methyl substituent on the Raman spectrum of but-3-enyl methyl ether
Bowen R.;Edwards H.;Varnali T. (2012) Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 93, 26-32.
The dissociation chemistry of low-energy N-formylethanolamine ions: Hydrogen-bridged radical cations as key intermediates
Jobst K.;Bowen R.;Terlouw J. (2011) International Journal of Mass Spectrometry. 306, 9-26.
A mechanistic study of the prominent loss of H
2
O from ionized 2-hydroxyaminoethanol
Jobst K.;Jogee S.;Bowen R.;Terlouw J. (2011) International Journal of Mass Spectrometry. 306, 138-149.
Raman spectroscopy of n-pentyl methyl ether and deuterium labelledanalogues
Bowen R.;Edwards H.;Farwell D.;Morgan S. (2010) Journal of Raman Spectroscopy. 41, 1725-1734.
Raman spectroscopy of unbranched hexenyl methyl ethers containing a terminal methoxy group
Bowen R.;Edwards H.;Farwell D. (2010) Journal of Molecular Structure. 976, 36-41.
Evidence of structure-selective fragmentations in the tandem mass spectra of protonated hydroxyalkylamino-1,4- naphthoquinones formed by electrospray ionisation
Bowen R.;Mahmood T.;Maitland D.;Mercer K.;Gallagher R. (2009) European Journal of Mass Spectrometry. 15, 617-626.
Elimination of H
2
from CH
3
CH=N⁺HCH
3
: A Synchronous, Concerted 1,4-H
2
Elimination
Hudson C.;Bowen R.;McAdoo D. (2008) Journal of the American Society for Mass Spectrometry. 19, 27-32.
Raman spectroscopy of 3-(pent-1-enyl) methyl ether and selected deuterium-labelled analogues
Brown H.;Bowen R.;Edwards H.;Farwell D. (2007) Journal of Raman Spectroscopy. 38, 1586-1594.
FT-Raman spectra of n-propanol and selected partially²H-labelled analogues
Edwards H.;Farwell D.;Bowen R. (2007) Journal of Molecular Structure. 832, 184-190.
Differentiation of isomeric allylic alkenyl methyl ethers by Raman spectroscopy
Clifford P.;Bowen R.;Edwards H.;Farwell D. (2007) Analytica Chimica Acta. 598, 268-279.
Raman spectroscopic and structural investigation of 1,4-diphenylbuta-1,3-diene and selected monomethyl and dimethyl substituted homologues
Bowen, Richard D.; Edwards, Howell G.M.; Waller, Zoe A.E. (2006) Analytica Chimica Acta. 580
Permeation of bioactive constituents from Arnica montana preparations through human skin in-vitro
Bonner, Michael C.; Bowen, Richard D.; Tekko, I.A.; Williams, Adrian C. (2006) Journal of Pharmacy and Pharmacology. 58
Differentiation of ionised benzimidazole from its isomeric α-distonic ion by collision-induced dissociation and neutralisation-reionisation mass spectrometry
Karapanayiotis T.;Bowen R. (2005) European Journal of Mass Spectrometry. 11, 381-387.
Proximity Effects in the Electron Impact Mass Spectra of 2-Substituted Benzazoles
Chantler, Thomas; Perrin, Victoria L.; Donkor, Rachel E.; Cawthorne, Richard S.; Bowen, Richard D. (2004)
Raman Spectroscopic and structural studies of indigo and its four 6,6'-Dihalogeno analogues
Bowen, Richard D.; Edwards, Howell G.M.; Jorge Villar, Susana E.; Karapanayiotis, Thanassis (2004) The Analyst. 129
Reactions of Ionised Pryridazine, 2-Aminopyrazine and 2-Aminopyridine and their a-Distonic Isomers.
Karapanayiotis, Thanassis; Dimopolos-Italiano, G.; Bowen, Richard D.; Terlouw, J.K. (2004)
Reactions of ionised pyridazine, aminopyrazine and aminopyridine and their isomeric α-distonic ions
Karapanayiotis T.;Dimopoulos-Italiano G.;Bowen R.;Terlouw J. (2004) International Journal of Mass Spectrometry. 236, 1-9.
Raman spectroscopic and structural studies of indigo and its four 6,6′-dihalogeno analogues
Karapanayiotis T.;Villar S.;Bowen R.;Edwards H. (2004) The Analyst. 129, 613-618.
Reactions of the ionised enol tautomer of acetanilide: Elimination of HNCO via a novel rearrangement
Heydorn L.;Carter L.;Bowen R.;Terlouw J. (2003) European Journal of Mass Spectrometry. 9, 343-350.
Reactions of low-energy pentenyl methyl ether radical cations C
2
H
5
CH=CHCH
2
OCH
3
·⁺, CH
2
=CHCH(C
2
H
5
)OCH
3
·⁺and CH
2
=C(C
2
H
5
)CH
2
OCH
3
·⁺
Bowen R.;Heydorn L.;Terlouw J. (2002) International Journal of Mass Spectrometry. 217, 109-118.
Reactions of ionised methyl pent-4-enyl ether, CH
2
=CH(CH
2
)
3
OCH
3
^·+
Bowen R.;Mandeville S.;Trikoupis M.;Terlouw J. (2001) International Journal of Mass Spectrometry. 210-211, 447-457.
Dissociation reactions of low-energy pentenyl methyl ether radical cations C
5
H
9
OCH
3
^•+
Bowen R.;Trikoupis M.;Terlouw J. (2001) European Journal of Mass Spectrometry. 7, 225-241.
The chemistry of some low energy C
5
H
9
O⁺oxonium ions
Bowen R.;Heydorn L.;Terlouw J. (2001) International Journal of Mass Spectrometry. 209, 153-169.
Effect of variations of the size and structure of the principal alkyl group on alkene elimination from the immonium ions CH
3
CH
2
CH=N⁺(CH
3
)R, CH
3
CH
2
CH
2
CH=N⁺(CH
3
)R and CH
3
CH
2
CH
2
CH
2
CH=N⁺(CH
3
)R
Mandeville S.;Bowen R.;Trikoupis M.;Terlouw J. (2000) International Journal of Mass Spectrometry. 199, 189-200.
Alkane eliminations from ions in the gas phase
McAdoo D.;Bowen R. (1999) European Journal of Mass Spectrometry. 5, 389-409.
The influence of the size and structure of a spectator alkyl group on the relative rates of alkyl radical elimination from ionised tertiary amines
Mandeville S.;Bowen R.;Trikoupis M.;Terlouw J. (1999) European Journal of Mass Spectrometry. 5, 339-351.
Water and hydrogen atom elimination from ionised n-propanol: Extraordinarily large kinetic isotope effects
Bowen R.;Mandeville S.;Trikoupis M.;Terlouw J. (1999) Chemical Communications., 2111-2112.
Low-energy, low-temperature mass spectra. Part 17: Selected aliphatic amides
Abebe M.;Maccoll A.;Bowen R. (1997) European Journal of Mass Spectrometry. 3, 197-208.
Reactions of metastable ionized γ,γ-dialkylallyl methyl ethers: Relative rates for elimination of alkyl radicals by formal γ-cleavage
Bowen R.;Clifford P.;Francis J.;Terlouw J. (1997) International Journal of Mass Spectrometry and Ion Processes. 165-166, 155-168.
Raman spectroscopic study of allyl methyl ether (3-methoxy-1-propene), CH
2
CHCH
2
OCH
3
, and some isotopically labelled analogues
Bowen R.;Edwards H.;Farwell D. (1995) Journal of Molecular Structure. 351, 77-86.
Mechanism of Propene and Water Elimination from the Oxonium Ion CH
3
CH=O⁺ CH
2
CH
2
CH
3
Bowen R.;Suh D.;Terlouw J. (1995) Journal of the Chemical Society, Perkin Transactions 2., 119-129.

Richard Bowen

Professor of Organic Chemistry

Publications

Peer reviewed journal (52)

Hammett Correlation in Competition Experiments in Dissociation of Ionised Substituted Benzophenones and Dibenzylideneacetones

Hammett Correlation in Competing Fragmentations of Ionized 2-Substituted Benzanilides generated by Electron Ionization Mass Spectrometry

Alkane eliminations from ions in the gas phase

The influence of the size and structure of a spectator alkyl group on the relative rates of alkyl radical elimination from ionised tertiary amines

Low-energy, low-temperature mass spectra. Part 17: Selected aliphatic amides

Reactions of metastable ionized γ,γ-dialkylallyl methyl ethers: Relative rates for elimination of alkyl radicals by formal γ-cleavage

Mechanism of Propene and Water Elimination from the Oxonium Ion CH 3CH=O+ CH2CH2CH3

Mechanism of Propene and Water Elimination from the Oxonium Ion CH
3
CH=O⁺ CH
2
CH
2
CH
3