Electrocatalytic stereoselective transformation of aldehydes and two molecules of pyrazolin-5-one into (R*,R*)-bis(spiro-2,4-dihydro-3H-pyrazol-3-one)cyclopropanes

Abstract

The electrocatalytic transformation of aldehydes and pyrazolin-5-one stereoselectively leads to (<italic>R</italic>*,<italic>R</italic>*)-bis(spiro-2,4-dihydro-3<italic>H</italic>-pyrazol-3-one)cyclopropanes in 65–80% yields.