Palladium-catalyzed intramolecular addition of trisilanes to carbon-carbon double bonds. Polyol synthesis by use of a disilanyl group as a hydroxyl equivalent
作者:Michinori Suginome、Shin-ichiro Matsunaga、Taisuke Iwanami、Akira Matsumoto、Yoshihiko Ito
DOI:10.1016/s0040-4039(96)02075-8
日期:1996.12
Intramolecular cyclization of trisilanyl ethers of homoallylalcohols proceeded regio- and stereoselectively with a 5-exo mode to give 3-(disilanylmethyl)-2-silatetrahydrofuran derivatives in good yields in the presence of a t-alkyl isonitrile-palladium catalyst. From the cyclized products thus obtained were synthesized polyols including the key intermediate in the total synthesis of (−) avenaciolide
均烯丙基醇的三甲硅烷基醚的分子内环化以5-exo模式进行区域和立体选择性,在叔烷基异腈-钯催化剂存在下,以高收率得到3-(二硅烷基甲基)-2-硅四氢呋喃衍生物。从如此获得的环化产物中,通过逐步氧化甲硅烷基和二硅烷基基团,在(-)avenaciolide的总合成中合成了包括关键中间体的多元醇。