Multiple C-H Bond Cleavage of Alkyl Group in (2,6-Dialkylphenoxo)ruthenium(II) Complex
Multiple C-H Bond Cleavage of Alkyl Group in (2,6-Dialkylphenoxo)ruthenium(II) Complex
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(2,6-二烷基苯氧基)钌(II)配合物中烷基的多重C-H键断裂
DOI：
10.1021/om5000248
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发表时间：
2014
期刊：
影响因子：
2.8
通讯作者：
S. Komiya
中科院分区：
文献类型：
--
作者：
M. Hirano;Y. Yanagisawa;E. Mulyadi;N. Komine;S. Komiya
RuCl_2（PMe_3）_4与过量的2，6-二甲基苯酚钾发生复分解反应，邻甲基的sp_3C-H键断裂，生成氧杂钌并[3-（2-甲基-2-氧杂钌并[3-（2-氧杂钌并[3-氧杂钌并用2，6-二乙基-和2，6-二异丙基苯酚钾，邻-烷基发生多个C-H键断裂，得到不饱和氧杂蒽并环。这些多重活化是由双（2，6-二烷基苯氧基）钌（II）的邻烷基的sp 3C-H键裂解以形成饱和的二烯并萘，随后由所得（2-烯基-6-烷基苯氧基）（二烯并）钌（II）中间体的β-氢化物消除和脱氢引发的。
The metathetical reaction betweencis-RuCl2(PMe3)4and an excess amount of potassium 2,6-dimethylphenoxide rapidly produces an oxaruthenacycle by the sp3C–H bond cleavage reaction of theo-methyl group. With potassium 2,6-diethyl- and 2,6-diisopropylphenoxides, multiple C–H bond cleavage ofo-alkyl groups occurs to give unsaturated oxaruthenacycles. These multiple activations are triggered by the sp3C–H bond cleavage of theo-alkyl group from bis(2,6-dialkylphenoxo)ruthenium(II) to form a saturated ruthenacycle followed by β-hydride elimination and dehydrogenation from the resulting (2-alkenyl-6-alkylphenoxo)(hydrido)ruthenium(II) intermediate.