ZIRCONOCENE-MEDIATED CYCLIZATION OF ALKYNYL DIBORYLMETHANES TO 1,3-DIBOROLANES

被引：31

作者：

METZLER, N ^{[1
]}

NOTH, H ^{[1
]}

THOMANN, M ^{[1
]}

机构：

[1] UNIV MUNICH,INST ANORGAN CHEM,MEISERSTR 1,W-8000 MUNICH 70,GERMANY

来源：

ORGANOMETALLICS | 1993年 / 12卷 / 07期

关键词：

D O I：

10.1021/om00031a009

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The carbon-carbon triple bond in bis[(di-alkylamino)(phenylethynyl)boryl]methanes 2a,b can be easily cyclized using zirconocene to give derivatives 3a,b of the new pentalene-like 6,8-dibora-3-zirconabicyclo[3.3.0]octa-1,4-diene, containing a zirconacyclopentadiene ring attached to a 1,3-diboracyclopentane unit. These heterocycles are characterized by NMR methods and by an X-ray structure determination of 3b. Compound 3b crystallizes from pentane in the monoclinic space group C2/c with a = 23.11(2) angstrom, b = 8.123(1) angstrom, c = 40.08(3) angstrom, beta = 97.63(6)degrees, V = 7458(8) angstrom3, and rho(calc) = 1.175 Mg/m3 for M = 659.7 g/mol and Z = 8.

引用

页码：2423 / 2425

页数：3

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