Activation of donor-acceptor cyclopropanes under basic conditions. Ring opening of 2-(p-siloxyaryl)cyclopropane 1,1-dicarboxylates with nitro compounds and other C-nucleophiles

A new approach towards the ring opening of aryl-substituted donor-acceptor cyclopropanes (DAC) is proposed. 2-(p-Siloxyaryl)cyclopropane 1,1-dicarboxylates underwent homo-Michael addition of nitro compounds promoted by TBAF and N-methylmorpholine. The transformation produces...