The Wittig olefination of decanoyl chloride by using the phosphonium salt 1 in the presence of two equivalents of Et3N represents a one-step synthesis of the racemic form of the naturally occurring pheromone (–)-2 which contains an alkenyl-substituted allenic moiety (ef. Scheme 1). It is also shown, that unsaturated acyl chlorides which contain at least one γ-H-atom undergo the Wittig reaction with
在维悌希
癸酰氯通过使用
鏻盐烯1中的的Et两个当量的存在3 N表示天然存在的信息素的外消旋形式的单步合成( - ) - 2,其含有链烯基取代
丙二烯部分(ef。方案1)。还显示出,包含至少一个γ-H原子的不饱和酰
氯与适当的
磷烷进行维蒂希反应,分别生成γ-烯基取代的α-烯酸酯和α-烯丙基γ-内酯(ef.schemes 2和3)。