Formation of a bridging planar trimethylenemethane dianion from a neopentyl precursor via sequential β-alkyl elimination and C-H activation

被引：30

作者：

Evans, WJ ^{[1
]}

Perotti, JM ^{[1
]}

Ziller, JW ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 04期

关键词：

D O I：

10.1021/ja044529y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction of neopentyllithium, Me3CCH2Li, with [(C5Me5)2Sm][(μ-Ph)2BPh2], 1, was investigated as a route to the unsolvated alkyl, [(C5Me5)2Sm(CH2CMe3)]x, and found to generate the first f element trimethylenemethane dianion complex, [(C5Me5)2Sm]2[μ-η3:η3-C(CH2)3], 2. Formation of the [C4H6]2- trimethylenemethane ligand from the [C5H11]1- neopentyl precursor can be explained by a combination of a β-methyl elimination reaction to form isobutene and [(C5Me5)2SmMe]3, 3, with subsequent C-H activation reactions. This sequence has been modeled in several ways, including the synthesis of 2 from reactions of 3 with CH2=CMe2 and 3 with the 2-methylallyl complex, (C5Me5)2Sm[CH2C(Me)CH2], 4. Copyright © 2005 American Chemical Society.

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页码：1068 / 1069

页数：2

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