Patent ID: 7696366

Claim:
A method for producing a bifunctional epoxy monomer represented by the following formula (2): wherein n represents an integer of 0 to 2, R 1 to R 8 each is independently identical or different, and represents a hydrogen atom, a hydroxy group, a halogen atom, a carboxyl group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, an aryl group, an aralkyl group, an acyl group, an acyloxy group, or R 1 and R 2 ; R 1 and R 3 ; R 1 and R 4 ; R 1 and R 5 ; R 2 and R 3 ; R 2 and R 4 ; R 2 and R 5 ; R 3 and R 4 ; R 3 and R 5 ; or R 4 and R 5 represent a carbon chain bridge having 1 to 3 carbon atoms, and these groups may be independently substituted with an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, an aryl group, an aralkyl group, a carboxyl group or a halogen atom, the method comprising selectively oxidizing a diolefin compound represented by the following formula (1): wherein n represents an integer of 0 to 2, R 1 to R 8 each is independently identical or different, and represents a hydrogen atom, a hydroxy group, a halogen atom, a carboxyl group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, an aryl group, an aralkyl group, an acyl group, an acyloxy group, or R 1 and R 2 ; R 1 and R 3 ; R 1 and R 4 ; R 1 and R 5 ; R 2 and R 3 ; R 2 and R 4 ; R 2 and R 5 ; R 3 and R 4 ; R 3 and R 5 ; or R 4 and R 5 represent a carbon chain bridge having 1 to 3 carbon atoms, and these groups may be independently substituted with an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, an aryl group, an aralkyl group, a carboxyl group or a halogen atom, using a hydrogen peroxide aqueous solution as an oxidizing agent without any use of an organic solvent, and using a Group VI metal compound and a quaternary ammonium hydrogen sulfate as a catalyst.