17946-71-3Relevant articles and documents
1,4-Dilithio-1,3-butadlenes
Ashe III, Arthur J.,Mahmoud, Samir
, p. 1878 - 1880 (2008/10/08)
On treatment with (trimethylstannyl)lithium in THF at -78°C, 1,4-dichlorobutadienes (4) gave the stereoisomeric 1,4-bis(trimethylstannyl)-1,3-butadienes (5-7). Compounds 5 and 7 may be converted to the corresponding 1,4-dilithio-1,3-butadienes (1 and 3) by treatment with excess methyllithium, while 6 and 7 may be converted to 1 by reaction with 1 equiv of methyllithium.
α-METALLATED VINYL CARBONIONIDS. II. PREPARATION AND STABILITY OF VINYLLITHIUMS CONTAINING TRIORGANOSTANNYL GROUPS ON THE α-CARBON ATOM
Mitchell, T. N.,Reimann, W.
, p. 141 - 150 (2007/10/02)
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.
