An efficient, chemoselective homologation of Weinreb amides to the corresponding variously substituted [small alpha]-oxyketones has been developed via the addition of lithiated [small alpha]-oxygenated species. This one-step, experimentally easy, high yielding protocol...
Silicon in synthesis. Methoxymethyltrimethylsilane, a new reagent for reductive nucleophilic acylation
作者:Philip Magnus、Glenn Roy
DOI:10.1039/c39790000822
日期:——
Lithium methoxy(trimethylsilyl)methylide (6), prepared by deprotonation of methoxymethyltrimethyl-silane (3) using s-butyl-lithium reacts with ketones and aldehydes to give adducts (7b)–(9b) that can be converted into aldehydes.