7-Hydroxy-3-phenyl--1-benzopyran-4-one 1a was condensed with 2-bromocyclohexanone to yield the corresponding ether 2a which on alkaline hydrolysis gave tetrahydrobenzofuran derivative 3a, the pyran ring being opened up during this reaction.Compound 3a
Joshi, S. C.,Trivedi, K. N.
p. 261 - 266
(2007/10/02)
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