Synthesis 2016; 48(17): 2863-2872
DOI: 10.1055/s-0035-1562100
paper
© Georg Thieme Verlag Stuttgart · New York

An Efficient One-Pot Two-Step Three-Component Process for the Synthesis of Trifluoromethylated Hydrochromenes

Xufeng Yan
a   Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. of China   Email: wgcao@staff.shu.edu.cn   Email: yehao7171@shu.edu.cn
,
Yeqing Yang
a   Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. of China   Email: wgcao@staff.shu.edu.cn   Email: yehao7171@shu.edu.cn
,
Jing Han
a   Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. of China   Email: wgcao@staff.shu.edu.cn   Email: yehao7171@shu.edu.cn
,
Guimei Jiang
a   Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. of China   Email: wgcao@staff.shu.edu.cn   Email: yehao7171@shu.edu.cn
,
Jie Chen
a   Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. of China   Email: wgcao@staff.shu.edu.cn   Email: yehao7171@shu.edu.cn
,
Hongmei Deng
b   Laboratory for Microstructures, Instrumental Analysis and Research Center of Shanghai University, Shanghai 200444, P. R. of China
,
Min Shao
b   Laboratory for Microstructures, Instrumental Analysis and Research Center of Shanghai University, Shanghai 200444, P. R. of China
,
Hui Zhang*
a   Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. of China   Email: wgcao@staff.shu.edu.cn   Email: yehao7171@shu.edu.cn
b   Laboratory for Microstructures, Instrumental Analysis and Research Center of Shanghai University, Shanghai 200444, P. R. of China
,
Weiguo Cao*
a   Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. of China   Email: wgcao@staff.shu.edu.cn   Email: yehao7171@shu.edu.cn
c   Key Laboratory of Synthetic Organic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
d   Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
› Author Affiliations
Further Information

Publication History

Received: 24 January 2016

Accepted after revision: 29 March 2016

Publication Date:
10 May 2016 (online)


Abstract

A one-pot two-step three-component process for the synthesis of trifluoromethylated 2-hydroxy-5-oxo-3,4,5,6,7,8-hexahydro-2H-chromenes has been developed. The three-component reaction of dimedone, substituted benzaldehydes, and methyl 4,4,4-trifluorobut-2-ynoate gave the desired products in moderate to good yields. Excellent regioselectivity and diastereoselectivity were observed. Furthermore, refluxing the product chromenes with p-toluenesulfonic acid in toluene gave the corresponding dehydrated products – trifluoromethylated 5-oxo-5,6,7,8-tetrahydro-4H-chromenes.

Supporting Information