A new method for synthesis of allenes, including an optically active form, from aldehydes and alkenyl aryl sulfoxides by sulfoxide–metal exchange as the key reaction and an application to a total synthesis of male bean weevil sex attractant
作者:Tsuyoshi Satoh、Noriko Hanaki、Yuko Kuramochi、Yujiro Inoue、Kayo Hosoya、Ken Sakai
DOI:10.1016/s0040-4020(02)00151-5
日期:2002.3
The sulfoxide–metal exchange reaction of β-acetoxy sulfoxides or β-mesyloxy sulfoxides, which were derived from alkenyl aryl sulfoxides and aldehydes in two steps, with a Grignard reagent or alkyllithium at low temperature gave allenes in good yields. Optically active allenes were synthesized starting from optically active 2-substituted ethenyl p-tolyl sulfoxides. A synthesis of (−)-methyl (E)-2,4
β-乙酰氧基亚砜或β-甲磺酰氧基亚砜的亚砜-金属交换反应可在两个步骤中与Grignard试剂或烷基锂在低温下分两步衍生自烯基芳基亚砜和醛,从而得到了高收率的烯。从旋光的2-取代的乙烯基对甲苯基亚砜开始合成旋光的烯。通过这种方法实现了雄性豆象甲性引诱剂(-)-甲基(E)-2,4,5-十四碳三烯酸酯的合成。