Patent ID: 8809567

Claim:
A method for producing a silyl enol ether compound represented by the formula (3) wherein R 1 is an alkyl group optionally having substituent(s), a cycloalkyl group optionally having substituent(s), an aralkyl group optionally having substituent(s), an alkenyl group optionally having substituent(s), an alkynyl group optionally having substituent(s), an aryl group optionally having substituent(s) or a heteroaryl group optionally having substituent(s); R 2 and R 3 are each independently a hydrogen atom, a halogen atom, an alkyl group optionally having substituent(s), a cycloalkyl group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s) or a heteroaryl group optionally having substituent(s); R 1 and R 3 , R 1 and R 2 , or R 2 and R 3 optionally form, together with the carbon atom(s) bonded thereto, a ring optionally having substituent(s); R 4 , R 5 and R 6 are each independently a hydrogen atom, a halogen atom, an alkoxy group optionally having substituent(s), an aryloxy group optionally having substituent(s), an alkyl group optionally having substituent(s), an alkenyl group optionally having substituent(s), an alkynyl group optionally having substituent(s), a cycloalkyl group optionally having substituent(s), a cycloalkenyl group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s), a heteroaryl group optionally having substituent(s) or a silyl group optionally having substituent(s); and two of R 4 , R 5 and R 6 optionally form a ring together with the silicon atom bonded thereto, which comprises reacting a ketone compound represented by the formula (1) wherein each symbol is as defined above, with an allylsilane compound represented by the formula (2) wherein R 7 , R 8 , R 9 , R 10 and R 11 are each independently a hydrogen atom, an alkyl group optionally having substituent(s), an alkenyl group optionally having substituent(s), an alkynyl group optionally having substituent(s), a cycloalkyl group optionally having substituent(s), a cycloalkenyl group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s), a heteroaryl group optionally having substituent(s), a halogen atom, a hydroxyl group, an alkoxy group, an amino group or a silyl group optionally having substituent(s); two of R 7 , R 8 , R 9 , R 10 and R 11 optionally form, together with the carbon atom(s) bonded thereto, a ring optionally having substituent(s); and other symbols are as defined above, in the presence of one mol % each tertiary amine base and triflic imide relative to a ketone compound represented by the formula (1).