Halomethyl-Metal Compounds. LXXVI. Alpha-Bromocyclopropyl Derivatives of Tin and Lead as Cyclopropylidene Precursors.

摘要

The thermolysis of 1-bromo-1-trimethyltin-cis-2, 3-dimethylcyclopropane (both isomers), anti-6-bromo-syn-6-trimethyltinbicyclo(3.1.0) hexane, 7-bromo-7-trimethyltinnorcarane, and also the 7-triphenyltin-, 7-trimethyllead- and 7-triphenyllead-derivatives (both isomers), 1-bromo-1-trimethyl-tinspiro (2.5) octane and 9-bromo-9-trimethyltinbicyclo (6.1.0) nonane (both isomers) has been studied. Under the conditions used, the syn-Me3Sn isomers decomposed, while the anti-Me3Sn isomers were quite stable. Only the norcarane system showed useful intermolecular divalent carbon transfer reactions. (Author)