Ring Fragmentations of 2-Alkenyl- and 2-Benzyl-1,3-dithiolanes Induced by Bases. A Novel Method for the Preparation of 1,1-Bisalkylthio- or 1-Alkylthio-alk-1-enes and -alka-1,3-dienes
The reaction of 2-alkenyl- and 2-benzyl-1,3-dithiolanes with several bases and successive alkylation with alkyl halides has been investigated.In the reaction of 2-alk-1-enyl-1,3-dithiolanes with organolithium reagents and alkyl halides, deprotonation at C