Highly efficient synthesis of allylic alcohols having an α-alkoxyalkyl group at their β-position via regioselective addition reaction of titanium-propargyl ether complexes with carbonyl compounds
作者:Koki Yamashita、Fumie Sato
DOI:10.1016/0040-4039(96)01647-4
日期:1996.9
Diisopropoxytitanium-propargyl ether complexes 2, readily generated in situ from reagent and propargylic ethers 3, react with aldehydes and ketones highly regioselectively at the carbon having an α-alkoxyalkyl group, thus affording an efficient and practical method for synthesizing allylicalcohols 4 having an α-alkoxyalkyl group at the β-position. The synthesis of conjugated dienes 7h and 8h from