Anodic desulfurization of dithioacetals of ketones in the presence of Et3N·3HF provided the corresponding gem-difluorocompounds while dithioacetals of aromatic and aliphatic aldehydes gave gem-difluoro thioethers and monofluoro thioether, respectively.
REDUCTIVE SILYLATION REACTIONS OF SULFIDES. A FACILE CONVERSION OF CARBON-SULFUR LINKAGES INTO CARBON-SILICON ONES
作者:Isao Kuwajima、Toru Abe、Kunio Atsumi
DOI:10.1246/cl.1978.383
日期:1978.4.5
It has been found that various phenyl sulfides undergo reductivesilylation to afford the corresponding alkyltrimethylsilanes in good yield.
已经发现,各种苯基硫化物经历还原性甲硅烷基化以良好的产率提供相应的烷基三甲基硅烷。
Desulfurizative silation, germation, and stannation of thioacetals and their analogues utilizing titanocene(II)
作者:Takeshi Takeda、Naoki Nozaki、Tooru Fujiwara
DOI:10.1016/s0040-4039(98)00524-3
日期:1998.5
Desulfurization of thioacetals with the low valent titanium species Cp2Ti[P(OEt)(3)](2) in the presence of trialkylsilanes afforded the corresponding tetraalkylsilanes. Allylsilanes were obtained regioselectively using beta,gamma-unsaturated thioacetals or 1,3-bis(phenylthio)alk-1-enes as starting materials. The similar titanocene(II)-promoted reactions of these organosulfur compounds with triethylgermane and tributylstannane gave tetraorganogermanes and stannanes, respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.
Reduction of titanocene dichloride with dysprosium: access to a stable titanocene(<scp>ii</scp>) equivalent for phosphite-free Takeda carbonyl olefination
A new titanocene(ii) equivalent obtained from the reduction of titanocene dichloride with dysprosium allows phosphite-free and simplified Takeda carbonyl olefination reactions.
The reaction of thiolesters with titanocene alkylidenes prepared by the treatment of thioacetals with the low valent titanium species Cp2Ti[P(OEt)3]2 produced the corresponding alkenyl sulfides in good yields with moderate to good Z stereoselectivity.
硫醇酯与通过用低价钛物质 Cp2Ti[P(OEt)3]2 处理硫代缩醛制备的二茂钛亚烷基反应,以良好的收率和中等至良好的 Z 立体选择性产生相应的烯基硫化物。