DIALLENYLBORANES AS STARTING MOLECULES FOR BORON HETEROCYCLES

被引：9

作者：

ENDERS, M ^{[1
]}

PRITZKOW, H ^{[1
]}

SIEBERT, W ^{[1
]}

机构：

[1] UNIV HEIDELBERG,INST ANORGAN CHEM,NEUENHEIMER FELD 270,W-6900 HEIDELBERG,GERMANY

来源：

CHEMISCHE BERICHTE-RECUEIL | 1992年 / 125卷 / 09期

关键词：

DIALLENYLBORANES; 1,5-H SHIFT; BORON HETEROCYCLES; BOROLE COBALT COMPLEX;

D O I：

10.1002/cber.19921250903

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction of allenyllithium with chloro(dialkylamino)bornanes leads to the diallenylboranes 1, 2a, 3a,b, and 4 in 58 - 80% yield. Attempts to obtain the B-tert-butyl derivative 2b resulted in the formation of the unusual bicyclo compound 9. Heating of 1 in toluene gives the intermediate borole derivative 5, which dimerises to the Diels-Alder product 5'. Reaction of 1 with (C5H5)Co(C2H4)2 leads to the cobalt-borole complex 6. No 1,5-H shift occurs on heating 2a and 3, respectively. Heating of 4 in mesitylene yields the dibora tricyclus 7, which undergoes a photochemical 1,5-H shift to 8. Single crystal X-ray structure determinations of 7, 8, and the complex 6 confirm their constitutions.

引用

页码：1981 / 1985

页数：5

共 25 条

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