Reactions of Adamantanethione with Ketenes: Formation of a 1,3,5-Dioxathiane

Abstract

The reaction between adamantanethione 1 and diphenylketene 9 yields 2,4-bis(diphenylmethylidene)-1,3,5-dioxathiane 14 via ketene–thione zwitterions. This is the first example of the formation of a 1,3,5-dioxathiane in a ketene reaction.