Synthesis of a Wide Range of Thioethers by Indium Triiodide Catalyzed Direct Coupling between Alkyl Acetates and Thiosilanes
作者:Yoshihiro Nishimoto、Aya Okita、Makoto Yasuda、Akio Baba
DOI:10.1021/ol300450j
日期:2012.4.6
An indium triiodide-catalyzed substitution of the acetoxy group in alkyl acetates with thiosilanes provides access to a variety of thioethers. The method is efficient for a wide scope of acetates such as primary alkyl, secondary alkyl, tertiary alkyl, allylic, benzylic, and propargylic acetates.
Dehydroxylation of alcohols for nucleophilic substitution
作者:Jia Chen、Jin-Hong Lin、Ji-Chang Xiao
DOI:10.1039/c8cc03856b
日期:——
The Ph3P/ICH2CH2I system-promoted dehydroxylative substitution of alcohols was achieved to construct C–O, C–N, C–S and C–X (X = Cl, Br, and I) bonds. Compared with the previous approaches such as the Appel reaction and Mitsunobu reaction, this protocol offers some practical advantages such as safe operation and a convenient amination process.
通过Ph 3 P / ICH 2 CH 2 I系统促进的醇的脱羟基取代反应,可构建C–O,C–N,CS–S和C–X(X = Cl,Br和I)键。与之前的方法(如Appel反应和Mitsunobu反应)相比,该方案具有一些实用的优点,例如操作安全和便捷的胺化过程。
Two‐Step Protocol for Iodotrimethylsilane‐Mediated Deoxy‐Functionalization of Alcohols
作者:Yuming Chen、Ru He、Hongjian Song、Guoqing Yu、Chenglin Li、Yuxiu Liu、Qingmin Wang
DOI:10.1002/ejoc.202001602
日期:2021.2.19
protocol for iodotrimethylsilane‐mediated deoxy‐functionalization of primary and secondaryalcohols was described. This protocol involves iodination of alcohol and then replaced by a N, S, or O nucleophile. Compared with traditional Mitsunobureaction, non‐acidic pre‐nucleophiles can be used in this protocol and configuration of alcohols can be retained.
OSitBuMe₂ and OSiiPr₃ groups, other than the OSiMe₃ group, were successfully substituted. The substitution reaction of enantiopure secondary benzylic silyl ether yielded the corresponding racemic thioether product, which suggested that the reaction of tertiary alkyl, secondary alkyl, benzylic, and propargylic silyl ethers would proceed via a SN1 mechanism.