期刊
TETRAHEDRON
卷 64, 期 44, 页码 10148-10154出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2008.08.047
关键词
Solvent-free; Ball-milling; Propargylic alcohol; Naphthopyran
资金
- National Natural Science Foundation of China [20621061, 20772117]
- National Basic Research Program of China [2006CB922003]
- Anhui Provincial Bureau of Education [ZD2007005-1]
Under solvent-free ball-milling conditions, the nucleophilic addition reactions of terminal alkynes to carbonyl compounds promoted by KOH proceeded efficiently at ambient temperature. Subsequent cyclization reactions of the synthesized propargylic alcohols with 2-naphthol catalyzed by indium trichloride tetrahydrate, leading to the formation of naphthopyrans, were then investigated. In most cases, side reactions were avoided and thus high yields were achieved. (c) 2008 Elsevier Ltd. All rights reserved.
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