Search Results - "Aylward, Nigel"

A Computational Study of a Prebiotic Synthesis of Menaquinone, Phylloquinone, and Vitamin K Analoges by Aylward, Nigel

“…Ab initio applied computing is used to determine the viability of a plausible mechanism for the formation of vitamin K from planetary and interstellar gases…”
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A Computational Study of a Prebiotic Synthesis of D-Riboflavin (Vitamin B2) by Aylward, Nigel

“…Ab initio applied computing is used to determine the viability of a plausible mechanism for the formation of riboflavin from planetary and interstellar gases…”
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A Computational Study of a Prebiotic Synthesis of Ergosterol, Ergocalciferol & Cholecalciferol (Vitamin D2 and D3) by Aylward, Nigel

“…The magnesium ion metalloporphyrin complex is shown to bind the ligands ethyne (e) and propyne (p) on the metal or nitrogen pyrrole sites as a two-site…”
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A Computational Study of a Prebiotic Synthesis of the Steroid Progesterone (C and D Rings) by Aylward, Nigel

“…The magnesium ion metalloporphyrin complex is shown to bind the ligands propyne (p) and ethyne (e) on the metal or nitrogen pyrrole sites as a two site…”
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A Computational Study of a Prebiotic Synthesis of the Steroid Progesterone (A and B Rings) by Aylward, Nigel

“…The magnesium ion metalloporphyrin complex is shown to bind the ligands propyne (p) and ethyne (e) on the metal or nitrogen pyrrole sites as a two site…”
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Pyrolysis of benzotriazoles. 1-Acyl- and 1-alkoxycarbonylbenzotriazoles: Hetero-Wolff rearrangement to N-acyl- and N-alkoxycarbonyl-fulvenimines and free radical routes to cyanocyclopentadienes by Wentrup, Curt, Freiermuth, Beat, Aylward, Nigel

“…[Display omitted] •FVP of 1-acyl- and 1-alkoxycarbonylbenzotriazoles yields N-acylfulvenimines.•N-Acyl- and N-alkoxycarbonylfulvenimines yield…”
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Triazoloazine-Diazomethylazine Valence Isomerization. [1,2,3]Triazolo[1,5-a]pyridines and 2-Diazomethylpyridines by Aylward, Nigel, Winter, Hans-Wilhelm, Eckhardt, Ulrich, Wentrup, Curt

“…2-Diazomethylpyridines 1D and 6D, the valence isomers of [1,2,3]triazolo[1,5-a]pyridines 1T and 6T, have been observed directly at ∼2080 cm(-1) by a…”
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Rearrangements of 4‑Quinolylcarbene, 3‑Quinolylcarbene, and 2‑Quinolylcarbene to 1-Naphthylnitrene and Cyanoindenes by Falling Solid Flash Vacuum Pyrolysis by Aylward, Nigel, Kvaskoff, David, Becker, Jürgen, Wentrup, Curt

“…The relationship between 4-quinolylcarbene 17, 3-quinolylcarbene 21, 2-quinolylcarbene 25, and 1-naphthylnitrene 35 has been explored experimentally and…”
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Ring Contraction in Arylcarbenes and Arylnitrenes; Rearrangements of 1- and 3‑Isoquinolylcarbenes and 2‑Naphthylnitrene to Cyanoindenes by Wentrup, Curt, Thétaz, Célestin, Lüerssen, Holger, Aylward, Nigel, Kvaskoff, David

“…Flash vacuum pyrolysis (FVP) of 1-(5-13C-5-tetrazolyl)­isoquinoline 18 generates 1-(13C-diazomethyl)­isoquinoline 19 and 1-isoquinolyl-(13C-carbene) 22, which…”
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An ab initio computational study of thiamin synthesis from gaseous reactants of the interstellar medium by Aylward, Nigel

“…A set of chemical reactions is proposed to account for the formation of thiamin derivatives from gaseous reactants that have been identified in the…”
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A plausible prebiotic synthesis of pyridoxal phosphate: Vitamin B 6 – A computational study by Aylward, Nigel, Bofinger, Neville

“…A set of chemical reactions is proposed to account for the formation of pyridoxal phosphate, Vitamin B 6, from a primeval atmosphere composed of…”
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A plausible prebiotic synthesis of pyridoxal phosphate: vitamin B6 - a computational study by Aylward, Nigel, Bofinger, Neville

“…A set of chemical reactions is proposed to account for the formation of pyridoxal phosphate, Vitamin B6, from a primeval atmosphere composed of cyanoacetylene,…”
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Intramolecular interactions in aminoacyl cyclic-3′,5′-nucleotides by Aylward, Nigel, Bofinger, N.

“…Polymerization of amino-acid acyl cyclic-3′,5′-nucleotides is postulated to be the origin of RNA and associated protein in prebiotic molecular evolution. The…”
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Triazoloazine–Diazomethylazine Valence Isomerization. [1,2,3]Triazolo­[1,5‑a]­pyridines and 2‑Diazo­methyl­pyridines by Aylward, Nigel, Winter, Hans-Wilhelm, Eckhardt, Ulrich, Wentrup, Curt

“…2-Diazomethylpyridines 1D and 6D, the valence isomers of [1,2,3]­triazolo­[1,5-a]­pyridines 1T and 6T, have been observed directly at ∼2080 cm–1 by a…”
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The reactions of methanimine and cyanogen with carbon monoxide in prebiotic molecular evolution on earth by Aylward, N, Bofinger, N

“…A primeval atmosphere is proposed containing simple molecules such as formaldehyde, ammonia, carbon monoxide, cyanogen and hydrogen cyanide, which have been…”
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Possible origin for porphin derivatives in prebiotic chemistry--a computational study by Aylward, Nigel, Bofinger, Neville

“…A set of chemical reactions is postulated to account for the formation of the macrocyclic porphin structure, basic to the pyrrole derivatives chlorophyll,…”
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