SYNTHESIS, SOLID-STATE STRUCTURE, AND REDUCTION OF 1,1-DICHLORO-2,3,4,5-TETRAMETHYLSILOLE

被引：95

作者：

BANKWITZ, U ^{[1
]}

SOHN, H ^{[1
]}

POWELL, DR ^{[1
]}

WEST, R ^{[1
]}

机构：

[1] UNIV WISCONSIN,DEPT CHEM,MADISON,WI 53706

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 499卷 / 1-2期

关键词：

SILICON; ZIRCONIUM; LITHIUM; SILOLE; CRYSTAL STRUCTURE; DIANION;

D O I：

10.1016/0022-328X(95)00333-L

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The previously unknown 1,1-dichloro-2,3,4,5-tetramethyl-1-silacyclopenta-2,4-diene (3) was prepared in a three-step synthesis starting from zirconocene dichloride, 2-butyne, and n-butyllithium via bis(cyclopentadienyl)-2,3,4,5-tetramethyl-1-zirconacyclopenta-2,4-diene (1) and 1,4-diiodo-1,2,3,4-tetramethylbuta-1,3-diene (2). 3 was characterized by NMR spectroscopy and single-crystal X-ray diffraction. Reaction of the new silole 3 with 4 equivalents of lithium in THF gives the corresponding dianion 4. H-1-, C-13-, and Si-29-NMR chemical shifts of 4 compared with 3 indicate some aromatic character for the ionic species. Trapping of 4 with Me(3)SiCl gives 1,1-bis(trimethylsilyl)-2,3,4,5-tetramethylsilole (5) in quantitative yield.

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页码：C7 / C9

页数：3

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