期刊
ARKIVOC
卷 -, 期 -, 页码 78-86出版社
ARKAT USA INC
DOI: 10.3998/ark.5550190.0007.e11
关键词
tetrahydrobenzopyran; aromatic aldehyde; malononitrile; 1,3-cyclohexanedione; 5,5-dimethyl-1,3-cyclohexanedione; aqueous media
A clean and efficient method for the synthesis of 2-amino-4-aryl-3-cyano-5-oxo-4H-5,6,7,8-tetrahydrobenzopyran derivatives using hexadecyldimethylbenzyl ammonium bromide (HDMBAB) as the catalyst is described. This method provides several advantages, such as simple work-up procedure, environmentally benign, neutral conditions and high yields. In addition, water was chosen as a green solvent.
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