Cyano(ethoxycarbonothioylthio)methyl Benzoate: A Novel One-Carbon Radical Equivalent
摘要:
Cyano(ethoxycarbonothioylthio)methyl benzoate 3 has been prepared and shown to be an excellent one-carbon radical equivalent that can be applied for the introduction of an acyl unit via xanthate transfer radical addition to olefins. The corresponding adducts can be further elaborated. A rare 1,5-nitrile translocation was also observed during the study.
Cyano(ethoxycarbonothioylthio)methyl Benzoate: A Novel One-Carbon Radical Equivalent
摘要:
Cyano(ethoxycarbonothioylthio)methyl benzoate 3 has been prepared and shown to be an excellent one-carbon radical equivalent that can be applied for the introduction of an acyl unit via xanthate transfer radical addition to olefins. The corresponding adducts can be further elaborated. A rare 1,5-nitrile translocation was also observed during the study.
A Convergent Synthesis of Enantiopure Open-Chain, Cyclic, and Fluorinated α-Amino Acids
作者:Shi-Guang Li、Fernando Portela-Cubillo、Samir Z. Zard
DOI:10.1021/acs.orglett.6b00656
日期:2016.4.15
A radical based synthesis of a broad variety of protected enantiopure α-amino acids, including fluorinatedderivatives, is described. The radicaladdition furnishes naturally latent mercapto-α-amino acids ideally equipped for native chemical ligation.
Stabilization of Radicals by Imides. A Modular Stereoselective Approach to Protected Functional 1,2-Diamines
作者:Songzhe Han、Samir Z. Zard
DOI:10.1021/ol502599r
日期:2014.10.17
Radical addition of various xanthates to N,N'-diacylimidazol-2-one occurs readily to give protected 1,2-diamines. The imide group stabilizes the adduct radical sufficiently to enable a second addition to unactivated alkenes. In some cases, the addition product could be converted into an indoline, a tetralone, or further added to an indole. Regioselective removal of one acyl group could also be accomplished.
A flexible radical approach to 5-substituted 4,5-dihydro-3H-pyrido[4,3-b]azepin-2-ones. Some mechanistic observations on the radical cyclisation-aromatisation process
作者:Laurent Petit、Iuliana Botez、André Tizot、Samir Z. Zard
DOI:10.1016/j.tetlet.2012.04.020
日期:2012.6
Variously substituted novel dihydropyridoazepinones have been prepared by an intermolecular radical addition followed by a radical cyclisation on a pyridine ring. The latter process involved the use of a combination of two different peroxides, an experimental contrivance resulting from a careful product analysis and a better understanding of the cyclisation step. (C) 2012 Elsevier Ltd. All rights reserved.
Cyano(ethoxycarbonothioylthio)methyl Benzoate: A Novel One-Carbon Radical Equivalent
作者:Sharanjeet K. Bagal、Michiel de Greef、Samir Z. Zard
DOI:10.1021/ol052634m
日期:2006.1.1
Cyano(ethoxycarbonothioylthio)methyl benzoate 3 has been prepared and shown to be an excellent one-carbon radical equivalent that can be applied for the introduction of an acyl unit via xanthate transfer radical addition to olefins. The corresponding adducts can be further elaborated. A rare 1,5-nitrile translocation was also observed during the study.