Disilenyllithium from tetrasila-1,3-butadiene: A silicon analogue of a vinyllithium

Disilenyllithium from tetrasila-1,3-butadiene: A silicon analogue of a vinyllithium
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DOI:
10.1021/om040056s
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发表时间:
2004-06-21
期刊:
影响因子:
2.8
通讯作者:
Sekiguchi, A
Sekiguchi, A
中科院分区:
化学2区
文献类型:
--
作者:
Ichinohe, M;Sanuki, K;Sekiguchi, A

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二硫代硅烷((Bu 2 MeSi)-Bu-t)(2)SiLi 2(2)与1,1,2,2-四氯-1,2-二均三甲苯基二硅烷反应生成四硅杂-1,3-丁二烯衍生物((Bu 2 MeSi)-Bu-t)(2)-Si=Si(Mes)(Mes)Si=Si((SiMeBu 2)-Bu-t)(2)(3; Mes = 2,4,6-三甲基苯基),为红紫色晶体。3与(BuLi)-Bu-t在THF中反应,通过还原裂解3中的中心Si-Si键,生成红色晶体1,1-双(二叔丁基甲基硅基)-2-锂-2-均三甲苯基二硅烯(4)。
The reaction of dilithiosilane, ((Bu2MeSi)-Bu-t)(2)SiLi2 (2), with 1,1,2,2-tetrachloro-1,2-dimesityldisilane produced the tetrasila-1,3-butadiene derivative ((Bu2MeSi)-Bu-t)(2)-Si=Si(Mes)(Mes)Si=Si((SiMeBu2)-Bu-t)(2) (3; Mes = 2,4,6-trimethylphenyl) as reddish purple crystals. The reaction of 3 with (BuLi)-Bu-t in THF produced 1, 1-bis(di-tert-butylmethylsilyl)-2-lithio-2-mesityldisilene (4) as red crystals, which is an sp(2)-type silyllithium species, by the reductive cleavage of the central Si-Si bond in 3.