(E)-9-Chloro-4-methyl-8-oxo-4-nonenoic acid, a useful intermediate in the synthesis of the potent antigestational agent ORF-13811 (a 3,8-dioxabicyclo[3.2.1]octane derivative), is efficiently prepared from 4-Choro-2-methyl-2-butene by using the ortho ester Claisen rearrangement.
(E)-9-
氯-4-甲基-8-氧代-4-
壬烯酸是一种在合成强效抗妊娠剂ORF-13811(一种3,8-二氧二环[3.2.1]
辛烷衍
生物)中有用的中间体,可通过使用原酯Claisen重排反应从4-
氯-
2-甲基-2-丁烯高效制备。