A facile synthesis of angular and linear 8/2-methyl furo[2,3-h]/[3,2-g] chromones and angular pyrano[2,3-f] isoflavones from 7-propargyloxy chromones and isoflavones

Article abstract of DOI:10.1515/HC.2008.14.5.337

The Claisen rearrangement of 7-propargyloxy chromones (2a-d) and 7-propargyloxy isoflavones (8a-f) in N,N-Diethylaniline at 195°C gave 8/2-methylfuro[2,3-h]/[3,2-g] chromones (3a-d) and pyrano [2,3-f] isoflavones (9a-f) respectively.

Full text of DOI:10.1515/HC.2008.14.5.337

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