Reactions of β-aroylacrylic acids with N-nucleophiles
作者:R. Dj. Khachikyan、N. V. Karamyan、H. A. Panosyan、M. H. Injikyan
DOI:10.1007/s11172-006-0068-7
日期:2005.8
Reactions of NH2OH·HCl with β-aroylacrylicacids proceed ambiguously: a nucleophile attacks either the carbonyl group or the C=C bond. In the latter case, the resulting α-hydroxyl-amino derivative converts into enamine, probably via dehydration followed by isomerization. Addition of 1,2,4-triazole to the C=C bond of β-(p-toluyl)acrylic acid followed by refluxing of their adduct with 60% NH2NH2·H2O
Decatungstate-Catalyzed Photochemical Synthesis of Enaminones from Vinyl Azides and Aldehydes
作者:Stanislav A. Paveliev、Oleg O. Segida、Olga M. Mulina、Igor B. Krylov、Alexander O. Terent’ev
DOI:10.1021/acs.orglett.2c03364
日期:2022.12.16
Visible light-induced synthesis of enaminones from vinylazides and aldehydes under decatungstate photocatalysis was developed. The reaction proceeds via acyl radical generation from aldehyde, followed by its addition to vinylazide, nitrogen elimination, hydrogen atom abstraction by the intermediate iminyl radical, and tautomerization. Photochemical synthesis was efficiently conducted under both batch