STEREOSELECTIVITY IN THE CATALYTIC OLIGOMERIZATION OF PHENYLSILANE

被引:81
作者
BANOVETZ, JP [1 ]
STEIN, KM [1 ]
WAYMOUTH, RM [1 ]
机构
[1] STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305
关键词
D O I
10.1021/om00056a009
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A variety of chiral and achiral zirconocene complexes were investigated for the stereoselective dehydrogenative coupling of phenylsilane. Polymerization of PhSiH3 with rac-(EBI)ZrCl2/BuLi or Cp2Zr(H)Cl yields a stereoregular polymer by Si-29 NMR spectroscopy. These results suggest that the stereogenic centers of the growing polymer chain may play a role in the stereochemistry of phenylsilane polymerization. A syndiotactic microstructure for the polyphenylsilanes is tentatively assigned on the basis of comparisons of their Si-29 NMR chemical shifts with those of known stereoregular cyclic oligomers.
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页码:3430 / 3432
页数:3
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