Facile Synthetic Method for the Preparation of Dithioacetals by the Double Conjugate Addition of Acetylenes Bearing Electron-Withdrawing Groups with Thiols
作者:Hirofumi Kuroda、Ikuyoshi Tomita、Takeshi Endo
DOI:10.1080/00397919608003520
日期:1996.4
mercaptanes in the presence of tri-n-butylphosphine in high yield. The corresponding dithioacetals could be also obtained by the conjugate addition of mercaptanes toward methyl β-alkylmercaptoenoates, in which, tri-n-butylphosphine also catalyzed the addition of thiols.
Titanocene(II)-Promoted Olefination of ω,ω-Bis(phenylthio)alkyl Alkanoates. A New Method for the Preparation of ω-Hydroxy Ketones
作者:Md.Abdur Rahim、Tooru Fujiwara、Takeshi Takeda
DOI:10.1016/s0040-4020(99)01091-1
日期:2000.1
Intramolecular olefination of esters having a thioacetal moiety was studied. The treatment of omega,omega-bis(phenylthio)alkyl alkanoates with Cp2Ti[P(OEt)(3)](2) and the following hydrolysis gave omega-hydroxy ketones in good yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
KASHIMA, CHOJI;TAJIMA, TADAKUNI;OMOTE, YOSHIMORI, J. HETEROCYCL. CHEM., 1984, 21, N 1, 171-175