期刊
GREEN CHEMISTRY
卷 16, 期 9, 页码 4122-4126出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4gc01402b
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资金
- CSIR
- UGC, New Delhi
- DST, Government of India [SR/S1/0C-1312011]
- CSIR-CSMCRI [OLP-0076]
A novel chitosan-catalyzed transamidation of carboxamides with amines under solvent-free conditions is described. A series of amide derivatives as well as more challenging aryl and alkyl amines with long-chain alkyl substituents could be selectively converted into the corresponding transamidation products, which are frequently found in biologically active compounds and pharmaceuticals. Under similar reaction conditions benzo[d]heterocycles were also obtained via a one-pot synthesis through transamidation and subsequent dehydration. Recyclability of chitosan was demonstrated, with quantitative yields of products obtained without any loss of catalytic activity.
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