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- W2029552264 abstract "Peracid oxidation of the title heterocycles has shown a variety of reaction pathways. 1-Methyl-2,3-diphenyl-1H-pyrrolo[2,3-b]pyridine (8) gave a ring-opened product (13), while 3-methyl-2-phenyl-1H-pyrrolo[2,3-b]pyrazine gave N-benzoylurea. In contrast, triazolo[1,5-a]pyrazine (36) undergoes smooth N-oxidation to the 7-oxide (37), triazolo[4,3-a]pyrazine (41) gives the N-oxide (42) less efficiently, and the pyrrolopyrazine (26) undergoes rearrangement and N-oxidation to give the spiro-compound (28). Triazolo[4,3-a]pyrazine 7-oxide (42) is readily obtained from 2-hydrazinopyrazine 4-oxide (45). The N-alkylation of the 2,3-diphenyl-1H-pyrrolo[2,3-b]pyridines (5) and (6), certain useful features of the n.m.r. spectra of the triazolopyrazines, (36) and (41), and their N-oxides, and some reactions of these N-oxides are reported." @default.
- W2029552264 created "2016-06-24" @default.
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- W2029552264 date "1980-01-01" @default.
- W2029552264 modified "2023-09-27" @default.
- W2029552264 title "Ring opening or rearrangement versus N-oxidation in the action of peracids upon pyrrolo[2,3-b]pyridines, pyrrolo[2,3-b]pyrazines, and triazolo[1,5-a]- and triazolo[4,3-a]-pyrazine. Some chemical and spectroscopic properties of the triazolopyrazines and their N-oxides" @default.
- W2029552264 doi "https://doi.org/10.1039/p19800000506" @default.
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