SYNTHESIS AND DIMERIZATION OF 2,3-DIMETHYL-5-SILASPIRO[4.4]NONA-2,7-DIENE - STRUCTURE DETERMINATION OF 2,3,12,13-TETRAMETHYL-5,10-DISILADISPIRO[4.4.4.4]OCTADECA-2,7,12,16-TETRAENE BY X-RAY CRYSTALLOGRAPHY

被引：12

作者：

PARK, YT ^{[1
]}

ZHOU, SQ ^{[1
]}

ZHAO, D ^{[1
]}

MANUEL, G ^{[1
]}

BAU, R ^{[1
]}

WEBER, WP ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT CHEM,DONALD P & KATHERINE B LOKER HYDROCARBON RES INST,LOS ANGELES,CA 90089

来源：

ORGANOMETALLICS | 1990年 / 9卷 / 10期

关键词：

D O I：

10.1021/om00160a032

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Unsymmetrical 2,3-dimethyl-5-silaspiro[4.4]nona-2,7-diene (I) has been prepared by a dissolving-metal reaction between 1,1-dichloro-1-silacyclopent-3-ene (III) and 2,3-dimethyl-1,3-butadiene. Ring-opening reactions of I catalyzed by alkyllithium reagents and hexamethylphosphoramide (HMPA) have been explored. High yields of the dimer 2,3,12,13-tetramethyl-5,10-disiladispiro[4.4.4.4]octadeca-2,7,12,16-tetraene (II) are formed in these reactions. The structure of II has been determined by X-ray crystallography. II lies on a crystallographic inversion center. It crystallizes in space group P1 (triclinic) with unit cell parameters a = 7.826 (3) Å, b = 9.415 (3) Å, c = 7.421 (3) Å, α = 94.11 (3)°, β = 114.56 (3)°, γ = 89.34 (3)°, V = 496.0 (3) Å3, and Z = 1. © 1990, American Chemical Society. All rights reserved.

引用

页码：2811 / 2813

页数：3

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