Electrochemicalreduction of 2-bromo-carboxamides involves self-protonation of the electrogenerated bases and affords, among other products, cyclo-adducts incorporating a dimethylformamide unit.
Electrochemical electrophilic bromination/spirocyclization of N-benzyl-acrylamides to brominated 2-azaspiro[4.5]decanes
作者:Zhongyi Zhang、Zhong-Wei Hou、Hao Chen、Pinhua Li、Lei Wang
DOI:10.1039/d3gc00728f
日期:——
An electrochemical electrophilic bromination/spirocyclization of N-benzyl-acrylamides with 2-bromoethan-1-ol as the brominating reagent has been developed. The paired electrolysis employs low concentrations of bromine produced from both cathodic reduction and anodic oxidation as an electrophile, and realizes an H2O-involved electrophilic spirocyclization. A number of unexplored brominated 2-azaspiro[4
Maran, Flavio; Vianello, Elio; D'Angeli, Ferruccio, Journal of the Chemical Society. Perkin transactions II, 1987, p. 33 - 39
作者:Maran, Flavio、Vianello, Elio、D'Angeli, Ferruccio、Cavicchioni, Giorgio、Vecchiati, Giorgio
DOI:——
日期:——
A metal-free synthesis of oxindoles by a radical addition-cyclization onto N-arylacrylamides with xanthates
作者:Shucheng Wang、Xuhu Huang、Bowen Li、Zemei Ge、Xin Wang、Runtao Li
DOI:10.1016/j.tet.2015.01.049
日期:2015.3
A convenient, high yielding synthesis of oxindoles by metal-free di-functionalization of alkenes with xanthates has been developed. This transformation involves a radical addition/cyclization process. Various arylalkylation products including alkyl ester-, benzyl-, cyano-, ketone-, amine-, and amide-substituted oxindoles were prepared in good to excellent yields. (C) 2015 Elsevier Ltd. All rights reserved.
SCRIMIN, P.;DANGELI, F.;CAVICCHIONI, G., SYNTHESIS, BRD, 1982, N 12, 1092-1094