作者:Gerald Haaima、Mary-Jeanne Lynch、Anne Routledge、Rex T. Weavers
DOI:10.1016/s0040-4020(01)87132-5
日期:1991.1
The iodoalkylidene lactones formed by reaction of alkenes with acetylenic acids in the presence of N-iodosuccinimide and subsequent free radical cyclisation, can be de-iodinated photochemically or alkylated with lithiumdiorganocuprate reagents to yield a variety of α-alkylidene lactones.
De-iodination and isomerisation of iodoalkylidene lactones
作者:Gerald Haaima、Anne Routledge、Rex T. Weavers
DOI:10.1016/s0040-4039(01)93474-4
日期:——
The (E)-iodoalkylidene lactones which can be formed by reaction of an alkene with N-iodosuccinimide and an acetylenic acid with subsequent free-radical cyclisation, are readily transformed into iodine free alkylidene lactones by photolysis. Under different reaction conditions, the photolyses yield mixtures of (E) and (Z)-iodovinylidene lactones.