Preparation of 1-phenylsulphonyl-1-phenylthio epoxide: Convenientprecursors to α-halo S-phenyl thio esters
作者:Cheryl T. Hewkin、Richard F.W. Jackson、William Clegg
DOI:10.1016/s0040-4039(00)80635-8
日期:1988.1
1-Phenylsulphonyl-1-phenylthio epoxides (3), readily prepared from aldehydes, react with lithium or magnesium halides to give high yields of the corresponding α-halo S-phenylthioesters.
Novel synthesis of ynolates via the cleavage of ester dianions: α-Bromo and α,α-dibromo esters as precursors
作者:Mitsuru Shindo、Yusuke Sato、Kozo Shishido
DOI:10.1016/s0040-4020(98)00006-4
日期:1998.3
ester dianions. The key intermediates, ester dianions, were generated from α-bromocarboxylic acid ester enolates via lithium halogen exchange. α,α-Dibromocarboxylic acid ester also gives lithium amide free ynolates by addition of tert-BuLi. The reactions of ynolates, generated by this novel and convenient method, with aldehydes to give β-lactons are discussed.
A Convenient Procedure for the Conversion of Carboxylic Acids to α-Bromo Thiolesters
作者:Hsing-Jang Liu、Weide Luo
DOI:10.1080/00397919108019816
日期:1991.10
Carboxylic acids can be conveniently transformed to the corresponding alpha-bromo thiolesters by a one-pot procedure involving Hell-Volhard-Zelinsky reaction and trapping the alpha-bromo acyl bromide intermediate with mercaptans.
HEWKIN, CHERYL T.;JACKSON, RICHARD F. W.;CLEGG, WILLIAM, TETRAHEDRON LETT., 29,(1988) N 38, C. 4889-4892
作者:HEWKIN, CHERYL T.、JACKSON, RICHARD F. W.、CLEGG, WILLIAM