α-METALLATED VINYL CARBONIONIDS. II. PREPARATION AND STABILITY OF VINYLLITHIUMS CONTAINING TRIORGANOSTANNYL GROUPS ON THE α-CARBON ATOM

Article abstract of DOI:10.1016/0022-328X(87)85002-7

The influence of intramolecular coordination and solvent effects on the formation and stability of α-stannylvinyllithium reagents RR'C=C(Li)SnMe3 (R'=H, alkyl aryl) has been investigated; intramolecular coordination via a 5-membered ring is particularly effective.Mechanisms for the isomerisation and thermal decomposition of RR'C=C(Li)SnMe3 are discussed, and multinuclear NMR data (119Sn, 13C and 1H) for these species are presented.