Stereoselective synthesis of (2S,3S,7S)-3,7-dimethylpentadecan-2-ol and its propionate, the sex pheromones of pine sawflies
作者:Vitaly Kovalenko、Evgenii Matiushenkov
DOI:10.1016/j.tetasy.2012.09.002
日期:2012.10
The stereoselective synthesis of (2S,3S,7S)-3,7-dimethylpentadecan-2-ol (diprionol) and its propionate, the sex pheromones of pine sawflies (Neodiprion sp. and other), in high enantiomeric purity was achieved from (1R,3S)-2,2-dichloro-3-methylcyclopropanecarboxylic acid. The carbon skeleton of diprionol was formed via copper-catalyzed cross-coupling reactions and diastereoselective methylation of the
(2所述的立体选择性合成小号,3小号,7小号)-3,7- dimethylpentadecan -2-醇(diprionol)及其丙酸酯,松叶蜂的性信息素(Neodiprion属和其他),在高对映体纯度为由(1R,3S)-2,2-二氯-3-甲基环丙烷甲酸获得。diprionol的碳骨架经铜-催化的交叉偶联反应,并用METI中间手性α-methylbranched醛的非对映选择性甲基化(O形成我-Pr)3在[(的存在- [R ,- [R)-TADDOL]的Ti( O i -Pr)2。后者的转化导致具有高立体选择性的合成加合物,这取决于醛中α-立体异构中心的存在和构型。(2 S,3 S,7 S)-二硫磷酚的非对映异构体纯度可通过其3,5-二硝基苯甲酸酯的结晶来大幅提高。