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Int J Mol Sci. 2014 Apr 22;15(4):6897-909. doi: 10.3390/ijms15046897.

An environmentally benign protocol for aqueous synthesis of tetrahydrobenzo[b]pyrans catalyzed by cost-effective ionic liquid.

Author information

1
Institute of Applied Chemistry, Taizhou University, Taizhou 318000, China. hhn12192000@126.com.
2
Institute of Applied Chemistry, Taizhou University, Taizhou 318000, China. lhqiu123@163.com.
3
Institute of Applied Chemistry, Taizhou University, Taizhou 318000, China. agying@tzc.edu.cn.
4
Institute of Applied Chemistry, Taizhou University, Taizhou 318000, China. yjg@tzc.edu.cn.
5
School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China. mhp@tzc.edu.cn.

Abstract

A mild, efficient, and environmentally benign protocol for the synthesis of tetrahydrobenzo[b]pyran derivatives in the presence of readily accessible, biodegradable, and choline hydroxide based ionic liquid as catalyst has been established. The key features of the reported methodology include good to excellent yields of desired products, simple work-up procedure and good recyclability of catalysts, which may be a practical alternative to the existing conventional processes for the preparation of 4-H pyrans to cater to the requirements of academia as well as industry.

PMID:
24758931
PMCID:
PMC4013668
DOI:
10.3390/ijms15046897
[Indexed for MEDLINE]
Free PMC Article
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