A General Synthesis of 1-Nitro-2-phenyl-4-oxospiro[2.5]octanes

Abstract
The novel title compounds 6 and 7 were conveniently synthesized by a facile two-step route starting from (2-chloro-2-nitroethenyl)benzenes 2 via the base-induced cyclopropanations of the intermediate 2-(2-chloro-2-nitro-1-phenylethyl)cyclohexanones 3 and 4.

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