Summy: The stereochemical study of the thermal de-composition of (2-(acyloxy) alkyi) triorganostannanes revealed an anti@-elimination of (acyioxy) triorganostannanes. The process is highly stereospecific and not pwtubd by the presence of a possible internal chelation favoring syn elimination. It corresponds to an open transition state. Kinetics of &elimination In cyclohexyl and norbornyi systems showed that the reaction is much more ...