Unexpected regioselectivity in the photocyclization of a chiral 2,3-bisbenzylidenesuccinate, leading to a podophyllotoxin related cyclolignan
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DOI: 10.1016/j.jphotochem.2018.06.023
Abstract: Abstract The Stobbe condensation between 3′,4′,5′-trimethoxyacetophenone and a benzylidenesuccinate derived from piperonal gave the Z,E-2,3-bisbenzylidenesuccinate as the only product. Such regioselectivity was explained by considering the Newman’s projections of the transition states of this reaction.… read more here.
Keywords: regioselectivity photocyclization; photocyclization chiral; regioselectivity; cyclolignan ... See more keywords