▎ 摘　　要

NOVELTY - A phase transfer catalyst comprises graphene oxide catalyst having oxygen-containing functional group. When the addition or condensation organic reaction is performed using phase transfer catalyst in presence of base catalyst including alkali-metal ion or alkaline-earth metal ion, the rate of the reaction is accelerated due to bonding of oxygen-containing functional group with alkali metal or alkaline earth metal. USE - Phase transfer catalyst is used in addition or condensation organic reaction e.g. Michael addition reaction, Aldol condensation, Claisen condensation reaction and Perkin reaction (all claimed).