A Directed Metalation Approach to 2-Trialkylammoniomethyl-3-trimethylsilylmethyl)-thiophene Iodides: Precursors to 2,3-Bis(methylene)-2,3-dihydrothiophene
作者:Andrew Plant、Derek J. Chadwick
DOI:10.1055/s-1990-27052
日期:——
Syntheses of precursors to 2,3-bis(methylene)-2,3-dihydrothiophene (2) are described. As key step, a lithiation reaction using secondary carboxamido functionality as directing group is used.
描述了2,3-bis(methylene)-2,3-dihydrothiophene (2) 前体的合成。作为关键步骤,使用次级羧酰胺官能团作为引导基团的锂化反应被应用。