PALLADIUM-CATALYZED N,N'-DIPHENYLUREA SYNTHESIS FROM NITROBENZENE, ANILINE, AND CARBON-MONOXIDE .4. LIGAND EFFECTS

被引：33
|
作者：
LEE, CW
LEE, JS
LEE, SM
KIM, KD
CHO, NS
OH, JS
机构：
[1] POHANG INST SCI & TECHNOL,DEPT CHEM ENGN,CATALYT TECHNOL RES CTR,POB 125,POHANG,SOUTH KOREA
[2] LUCKY R & D CTR,CHEM PROC & CATALYSIS,DAEJON,SOUTH KOREA
来源：
JOURNAL OF MOLECULAR CATALYSIS | 1993年 / 81卷 / 01期
关键词：
ANILINE; CARBON MONOXIDE; DIPHENYLUREA; LIGAND EFFECTS; NITROBENZENE; PALLADIUM;
D O I：
10.1016/0304-5102(93)80019-Q
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of various ligands on the catalytic properties of palladium complex in the synthesis of N,N'-diphenylurea from nitrobenzene, aniline and carbon monoxide have been studied. Both the electronic and the steric properties of the ligands were found to have a profound effect. Compared to monodentate phosphines, bidentate ligands showed higher activity and promoted preferentially a path of the reaction network that involved steps in which the cis coordination of ligands to palladium was favored. The higher reaction rates were observed for those complexes with a greater electron density on palladium metal.
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收藏
页码：17 / 25
页数：9
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