ChemInform Abstract: Cleavage of the N(1)—C(4) Bond of 4-(4′-Hydroxyphenyl)-azetidine-2-ones via Quinone Methide Intermediates.
Abstract
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ChemInform Abstract
On treatment with base, azetidinones (I) undergo a novel ring-opening reaction to give quinone methide intermediates. Their 1,6-conjugate addition reactions yield the esters (III) and (V).