期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 352, 期 13, 页码 2183-2188出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201000395
关键词
N-acylureas; carbonylation; homogenous catalysis; microwave heating; palladium; ureas
A new, practical synthesis of aryl and heteroaryl N-acylureas has been developed via palladium-catalysed carbonylation of aryl or heteroaryl halides in the presence of urea nucleophiles. A range of reactions illustrating the wide scope of this reaction was carried out under microwave irradiation, using either carbon monoxide gas in a vessel equipped with a gas inlet adapter, or molybdenum hexacarbonyl as the carbon monoxide source in standard microwave vials. The reactions proceeded in good to excellent yields. To illustrate the usefulness of this method a one-step synthesis of the important insecticide diflubenzuron is reported.
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