(4R)-Ethyl 4-(4-chlorophenyl)-2-hydroxy-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate
The title compound, C21H17ClO6, is optically pure and adopts an R configuration. It was obtained by an organocatalytic asymmetric Michael addition of 4-hydroxycoumarin with (E)-ethyl 4-(4-chlorophenyl)-2-oxobut-3-enoate. The structure consists of a tetrahydropyran unit fused to the coumarin ring rin...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
International Union of Crystallography
2010-01-01
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| Series: | Acta Crystallographica Section E |
| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600536809051976 |