ZnCl2 promoted formal (3+2) cycloaddition reactions of 2-alkoxy-1,4-benzoquinones with 2H-chromenes.

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ZnCl2 promoted formal (3+2) cycloaddition reactions of 2-alkoxy-1,4-benzoquinones with 2H-chromenes.

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Title: ZnCl2 promoted formal (3+2) cycloaddition reactions of 2-alkoxy-1,4-benzoquinones with 2H-chromenes.
Author: SUBBURAJ, K; MURUGESH, MG; TRIVEDI, GK
Abstract: A simple, mild, inexpensive and highly efficient method for the synthesis of 2,2-dimethyldihydropyranopterocarpans (4a-h and 5a-b) by formal (3+2) cycloaddition reactions of 2-alkoxy-1,4-benzoquinones (3a-b) with 2H-chromenes(1a-d and 2) using ZnCl2 at room temperature has been developed.
URI: http://dx.doi.org/10.1080/00397919608005223
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10040
http://hdl.handle.net/10054/10040
Date: 1996


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