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 allylic alcohols 4 having an α-alkoxyalkyl group at the β-position. The synthesis of conjugated dienes 7h and 8h from
由试剂和炔丙基醚3容易地就地生成的二异丙氧基钛-炔丙基醚络合物2在具有α-烷氧基烷基的碳上与醛和酮高度区域选择性地反应,因此提供了一种有效且实用的合成具有α的烯丙基醇4的方法。β-位上的-烷氧基烷基。还描述了由所得的4h合成共轭二烯7h和8h。