Preparation and Synthetic Utility of 2-Methylselenomethyl Allyl Methyl Selenide. A Valuable Precursor to 2-Silylmethylallyllithiums
作者:Alain Krief
DOI:10.1055/s-1998-1915
日期:1998.11
3-Lithio-2-[silylmethyl]propenes, easily prepared from 3-methylseleno-2-[silylmethyl]propenes by the cleavage of the C-Se bond, are useful intermediates for the preparation of a variety of functionalised allylsilanes. These allylsilanes are interesting building blocks, used for example, as annelating agents in the efficient synthesis of spiroketals by the Intramolecular Silyl-Modified Sakurai (ISMS)
3-Lithio-2-[silylmethyl]propenes 很容易从 3-methylseleno-2-[silylmethyl]propenes 通过 C-Se 键的断裂制备,是制备各种功能化烯丙基硅烷的有用中间体。这些烯丙基硅烷是有趣的结构单元,例如用作通过分子内甲硅烷基改性 Sakurai (ISMS) 环化有效合成螺缩酮的退火剂。本文中描述的方法还提供了获得一系列杂取代甲基硒丙烯的便利途径,这些是一系列有用的杂取代烯丙基锂试剂的有价值的前体。最后,报道了从容易获得的 3-甲基硒基-2-[甲基硒基甲基]丙烯一步制备官能化烯丙基硅烷的方法。