Hoffman, Robert V.; Nayyar, Naresh K.; Chen, Wenting, Journal of the American Chemical Society, 1993, vol. 115, # 12, p. 5031 - 5034
作者:Hoffman, Robert V.、Nayyar, Naresh K.、Chen, Wenting
DOI:——
日期:——
Synthesis of .alpha.-azido and .alpha.-amino amides from N-[(methylsulfonyl)oxy]amides
作者:Robert V. Hoffman、Naresh K. Nayyar、Wenting Chen
DOI:10.1021/jo00061a004
日期:1993.4
Effective new syntheses of 2-azido amides and 2-amino amides from N-(mesyloxy) amides 1 have been developed. 2-Azido amides are produced by treating 1 with sodium azide in the presence of 15-crown-5. 2-Amino amides result from the reaction of 1 with various amines. Regiochemical control in the preparation of 2-amino amides is possible by modulating the amine nucleophilicity by steric bulk.
GUENDEL, W. -H.;BOHNERT, S., Z. NATURFORSCH., 1985, 40, N 10, 1409-1414
作者:GUENDEL, W. -H.、BOHNERT, S.
DOI:——
日期:——
Anionic Hetero[3,3] and [3,5] Rearrangements of Hydroxylamine Derivatives Accompanied with N-O Bond Cleavage
Aromatic and aliphatic N,O-divinylhydroxylamine systems generated in situ from hydroxylamine derivatives smoothly undergo [3,3] rearrangement. The base-catalyzed formation and rearrangement of enolates or dienolates of N-aryl-O-acylhydroxylamines, N,O- diacylhydroxylamines and N-acylhydroxylamine-O-carbamates result in C-C or C-N bond formation with cleavage of the N -O bond.