N,N-bis(trimethylsilyl)methoxymethylamine as a convenient synthetic equivalent for +CH2NH2: N,N-bis(trimethylsilyl)aminomethylation of silyl sulphides and phosphites
作者:Toshiaki Morimoto、Masahiro Aono、Minoru Sekiya
DOI:10.1039/c39840001055
日期:——
N-Silyl-protected primary aminomethyl sulphides and aminomethylphosphonates can be synthesised by the Lewis acid-catalysed reactions of silyl sulphides and silylphosphites with N,N-bis(trimethylsilyl)methoxymethylamine.
[1,4]‐S‐ to O‐Silyl Migration: Multicomponent Synthesis of α‐Thioketones through Chemoselective Transformation of Esters to Ketones with Organolithium Reagents
作者:Xianwei Sun、Zhenlei Song、Hongze Li、Changzheng Sun
DOI:10.1002/chem.201303459
日期:2013.12.16
A [1,4]‐S‐ to O‐silylmigration has been exploited to chemoselectively transform esters into ketones by using organolithiumreagents, allowing multicomponentsynthesis of α‐thioketones. Mechanistic studies reveal that this migration proceeds in an intramolecular manner and is more favorable than the corresponding [1,5]‐S‐ to O‐ and [1,3]‐C‐ to O‐silylmigrations. The resulting α‐thioketones are valuable