Intramolecular Coupling of Vinyl Ether and Olefins or Acetylenes with Ti(II) Reagent. Regio- and Stereo-selective Vinyltitanation of Carbon-Carbon Multiple Bonds
作者:Ryota Nakajima、Hirokazu Urabe、Fumie Sato
DOI:10.1246/cl.2002.4
日期:2002.1
Treatment of m-alkenyl (or m-alkynyl) vinyl ethers (m = 3,4) with a Ti(II) reagent generated most likely bicyclic oxatitanacycles, which eliminate the alkoxide tether to effect the selective vinyltitanation of the alkene or alkyne moiety to give m-vinyl-1-alkanols or m-vinyl-m-alken-1-ols.
用 Ti(II) 试剂处理间链烯基(或间炔基)乙烯基醚(m = 3,4)最有可能产生双环氧杂钛环,它消除了醇盐系链以实现烯烃或炔烃部分的选择性乙烯基钛化给出 m-vinyl-1-alkanols 或 m-vinyl-m-alken-1-ols。