Green synthesis of 3-(1-naphthyl), 4-methyl-3-(1-naphthyl) coumarins and 3-phenylcoumarins using dual-frequency ultrasonication

Green Processing and Synthesis

article

Neeraj Vashisth¹  Satya Parkash Sharma¹  Surender Kumar²  Aruna Yadav² 

[1] Department of Chemistry, Baba Mastnath University;Department of Chemistry, Chaudhary Bansi Lal University

关键词: ultrasonication;    naphthyl coumarins;    1-naphthylacetic anhydride;    3-phenylcoumarins;    phenylacetic anhydride;   

DOI  :  10.1515/gps-2020-0042

来源: De Gruyter

【 摘 要 】

Green synthesis of 3-(1-naphthyl), 4-methyl-3-(1-naphthyl) coumarins and 3-phenylcoumarins has been carried out in one step by reacting 2-hydroxybenzaldehydes and 2-hydroxyacetophenones with 1-naphthylacetic anhydride and phenylacetic anhydride, respectively, using dual-frequency ultrasonication, i.e. ultrasonic bath of 40 kHz and probe of 20 kHz. The compounds were obtained in very high yield (80–90%) and their structures were confirmed by infrared and nuclear magnetic resonance data.

【 授权许可】

CC BY