Tetrahedron p. 863 - 876 (1986)
Update date:2022-08-04
Topics:
Ramakanth, S.
Narayanan, K.
Balasubramanian, K. K.
Rajagopalan, K.
A novel photochemical ring contraction of 6H-(benzofuro)(3,2-c)(1)11a,6a-dihydro-11a-methylbenzopyrans, 1 or shortly, 11a-methylpterocarpans to the respective 4b,9b-dihydro-4b,9b-dimethylbenzofuro(3,2-b)benzofurans 2 is reported.This transformation of 1->
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