FORMATION OF ORGANODILITHIUM COMPOUNDS VIA LITHIUM-TIN EXCHANGE

被引:38
作者
ASHE, AJ [1 ]
LOHR, LL [1 ]
ALTAWEEL, SM [1 ]
机构
[1] MUTAH UNIV,DEPT NAT SCI,MUTAH AL KARAK,JORDAN
关键词
D O I
10.1021/om00053a054
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
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.
引用
收藏
页码:2424 / 2431
页数:8
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