Phase transfer catalyzed N-alkylation of sym-N, N′-diarylureas

…, AR Choudhary, NR Ayyangar

文献索引：Kalkote, U. R.; Choudhary, A. R.; Ayyangar, N. R. Organic Preparations and Procedures International, 1992 , vol. 24, # 1 p. 83 - 87

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被引用次数: 3

摘要

National Chemical Laboratory Pune 41 1 008, INDIA sym-NN-Diethyldiphenylurea (Centralite I) is used commercially as stabilizer for a number of explosives.'Recently a non- phosgene route involving the N-ethy lation of sym-N, Ndiphenylurea (DPU) using phase- transfer catalyst (EC) has been reported? As an extension of our work on the N-alkylation of benzanilides3 and aminoanthraquinones, 4 we now describe the alkylation of diarylureas ...