The reaction of methyllithium in THF with 2,5-bis(trimethylstannyl)-1,5-hexadiene (6) affords 2,5-dilithio-1,5-hexadiene (2) via the intermediacy of lithium stannates. The similar reaction of (2Z,4Z)-2,5-bis(trimethylstannyl)-2,4-hexadiene (11) affords (2E,4E)-2,5-dilithio-2,4-hexadiene (3). The more favorable formation of 3 suggests a greater relative stability over 2. Ab initio calculations indicate that the symmetrical dilithium-bridged structure found for 3 is more favorable than the unsymmetrical dilithium-bridged structure found for 2.
Ashe III, Arthur J.; Diephouse, Timothy R.; Kampf, Jeff W., Organometallics, 1991, vol. 10, # 6, p. 2068 - 2071
作者:Ashe III, Arthur J.、Diephouse, Timothy R.、Kampf, Jeff W.、Al-Taweel, Samir M.
DOI:——
日期:——
ASHE, ARTHUR J. (III);LOHR, LAWRENCE L.;AL-TAWEEL, SAMIR M., ORGANOMETALLICS, 10,(1991) N, C. 2424-2431
作者:ASHE, ARTHUR J. (III)、LOHR, LAWRENCE L.、AL-TAWEEL, SAMIR M.
DOI:——
日期:——
Aromatic antimony compounds. Transition metal complexes of 2,5-dimethylstibacyclopentadienyl
作者:Arthur J. Ashe、Timothy R. Diephouse
DOI:10.1016/s0022-328x(00)81877-x
日期:1980.12
Formation of organodilithium compounds via lithium-tin exchange
作者:Arthur J. Ashe、Lawrence L. Lohr、Samir M. Al-Taweel
DOI:10.1021/om00053a054
日期:1991.7
The reaction of methyllithium in THF with 2,5-bis(trimethylstannyl)-1,5-hexadiene (6) affords 2,5-dilithio-1,5-hexadiene (2) via the intermediacy of lithium stannates. The similar reaction of (2Z,4Z)-2,5-bis(trimethylstannyl)-2,4-hexadiene (11) affords (2E,4E)-2,5-dilithio-2,4-hexadiene (3). The more favorable formation of 3 suggests a greater relative stability over 2. Ab initio calculations indicate that the symmetrical dilithium-bridged structure found for 3 is more favorable than the unsymmetrical dilithium-bridged structure found for 2.