Sodium borohydride → HCID 20340061, compound

Participants

Reaction Steps

The known 2,5,5-trimethyl-cyclopent-2-en-1,4-dione of formula IV is dissolved in an organic solvent (e.g. an alkanol) and reduced at a temperature below 0° C. with sodium borohydride. The desired 4-hydroxy-2,5,5-trimethyl-cyclopent-2-en-1-one of formula V is isolated by rectification from the isomeric mixture which occurs during the working-up.

Provenance & Evidence