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。