1,2-AZABOROLYL COMPLEXES .31. CYCLOOLIGOMERIZATION OF ALKYNES AT THE 1,2-AZABOROLYLCOBALT MOIETY

被引：17
|
作者：
SCHMID, G
SCHUTZ, M
机构：
[1] Institut für Anorganische Chemie, Universität Essen
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 492卷 / 02期
关键词：
CYCLOTRIMERIZATION; CYCLODIMERIZATION; ALKYNES; COBALT; 1,2-AZABOROLYL COMPLEXES;
D O I：
10.1016/0022-328X(94)05308-X
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
1-tert-Butyl-2-methyl-eta(5)-1H-1,2-azaboro-bis(eta(2)-ethene)cobalt (AbCo(C2H4)(2)) (1) reacts with 2-butyne to give AbCo(eta(4)-1,2,3,4-tetramethyl-1,3-cyclohexadiene) (2) and catalytically generated free hexamethylbenzene. With diphenylethyne, 3-hexyne and 4-octyne the formation of 1,3-cyclohexadiene complexes 3, 5 and 7 is observed as well as the cyclodimerization of the alkynes with formation of cyclobutadiene complexes 4, 6 and 8. The separation of corresponding cyclohexadiene and cyclobutadiene complexes is possible by high performance liquid chromatography, as is exemplified with the combination 3-4. Two-dimensional NMR techniques enable the characterization of the product mixtures 5-6 and 7-8.
引用
收藏
页码：185 / 189
页数：5
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