A novel reaction of N-phenylthiocaprolactam: The α-sulfenylation of ketones under mild conditions
摘要:
N-phenylthiocaprolactam (2) reacts with the enolate anions of aliphatic, aromatic or cyclic ketone 1a-e, to give the corresponding alpha-phenylthioketones 3a-e. This reaction proceeds with high yields of monosulphenylation (80-97%) in DMSO under mild conditions (potassium terbutoxide, 25 degrees C, 10 min). (C) 1997 Elsevier Science Ltd.
Diastereoselective sulfenylation reactions employing N-phenylthio lactams under nonbasic conditions
作者:Lawrence J. Wilson、Dennis C. Liotta
DOI:10.1021/jo00033a004
日期:1992.3
Silyl enol ethers and silyl ketene acetals react with sulfenamides in the presence of trimethylsilyl triflate to give the corresponding trans-sulfenylated ketones and lactones.
Asymmetric synthesis of α-mercapto-β-amino acid derivatives: application to the synthesis of polysubstituted thiomorpholines
作者:José I. Candela-Lena、Stephen G. Davies、Paul M. Roberts、Bruno Roux、Angela J. Russell、Elena M. Sánchez-Fernández、Andrew D. Smith
DOI:10.1016/j.tetasy.2006.04.004
日期:2006.4
Tandem conjugate addition of homochiral lithium N-benzyl-N-(alpha-methyl-p-methoxybenzyl)amide to tert-butyl cinnamate and enolate trapping with (TsSBu)-Bu-t proceeds with high diastercoselectivity to give a homochiral anti-alpha-tert-butylthio-beta-amino ester. Stepwise deprotection gives the corresponding free alpha-tert-butylthio-beta-amino acid without epimerisation. Tandem conjugate addition of homochiral lithium N-allyl-N-(alpha-methylbenzyl)amide to tert-butyl cinnamate and enolate trapping with TsS'Bu followed by conversion of the S-tert-butyl group to a disulphide, and reduction with Lalancette's reagent generates polysubstituted thiomorpholine derivatives. (c) 2006 Elsevier Ltd. All rights reserved.
Sugar donor
申请人:Riken
公开号:EP1829884B1
公开(公告)日:2010-11-10
SOSNOVSKY G.; KROGH J. A., SYNTHESIS, 1979, NO 3, 228-230
作者:SOSNOVSKY G.、 KROGH J. A.
DOI:——
日期:——
SUGAR DONOR
申请人:MANABE Shino
公开号:US20070208171A1
公开(公告)日:2007-09-06
The present invention provides a compound represented by the following formula (1):
wherein X1 and X2 each independently represent a hydrogen atom or a hydroxyl-protecting group; Y represents a C7-20 aralkyl group which may optionally have one or more substituents selected from a halogen atom, a lower alkyl group or a lower alkoxy group; and Z represents a halogen atom, a C1-4 alkylthio, or an arylthio group, or its corresponding sulfoxide group.