Stereoselective Synthesis of Highly Functionalized Nitrocyclopropanes via Organocatalyic Conjugate Addition to Nitroalkenes
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A convenient and novel one-pot organocatalytic methodology for the stereoselective synthesis of highly functionalized nitrocyclopropanes is reported. The addition of dimethyl chloromalonate to a variety of nitroolefins catalyzed by tertiary amines leads to a Michael adduct which cyclizes to form the cyclopropane in the presence of DBU under carefully controlled reaction conditions with outstanding diastereoselectivity.
创建时间:
2006-09-15



