Synthesis of alkyl nitronates via Mitsunobu condensation
摘要:
Nitroalkanes bearing electron-withdrawing or unsaturated substituents at the alpha-carbon experience exclusive intra- and intermolecular 0-alkylation by alcohols under Mitsunobu condensation conditions furnishing good to excellent yields of alkyl nitronates; in contrast, 1-phenylsulphonyl-1-nitro-3-propanol affords mainly the corresponding cyclopropane.