PHOSPHINE-LIGANDS .2. BIDENTATE PHOSPHINES OF HETEROARENES - 4,6-BIS(DIPHENYLPHOSPHINO)DIBENZOFURAN AND 4,6-BIS(DIPHENYLPHOSPHINO)DIBENZOTHIOPHENE

被引：55
|
作者：
HAENEL, MW
JAKUBIK, D
ROTHENBERGER, E
SCHROTH, G
机构：
[1] Max-Planck-Institut für Kohlenforschung, Mülheim/Ruhr, W-4330
来源：
CHEMISCHE BERICHTE | 1991年 / 124卷 / 08期
关键词：
PHOSPHINE LIGANDS; DIBENZOFURAN; DIBENZOTHIOPHENE; LITHIUM COMPOUNDS; MULTIPLE LITHIATION;
D O I：
10.1002/cber.19911240806
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Twofold lithiation of dibenzofuran (6) and dibenzothiophene (12) with n-butyllithium/N,N,N',N'-tetramethylethylenediamine (TMEDA) in n-hexane or n-pentane followed by the reaction with chlorodiphenylphosphine yielded the title compounds 4 and 5, respectively. The monophosphines 4-(diphenylphosphino)dibenzofuran (11) and 4-(diphenylphosphino)dibenzothiophene (15) were obtained analogously via the monolithium compounds 9 and 14 of the heteroarenes. In the case of dibenzofuran (6), it was shown that mono- and dilithiation is controlled by temperature.
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页码：1705 / 1710
页数：6
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