Method for producing racemate of compound
AssigneeSumitomo Chemical Company, Limited
InventorsTomoaki Takahashi, Taro Hirose
Life of this patent
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Abstract
A method for producing a racemate of a compound represented by Formula (1), including bringing a transition metal catalyst into contact with an optically active form of the compound represented by Formula (1): [in Formula (1), a ring X1 represents an aromatic ring; R1 represents a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C1-6 halo-alkyl group; R2 is a group different from R1 and represents a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C1-6 halo-alkyl group, or R2 and the ring X1 are bonded to each other to form a ring; a hydrogen atom(s) of the ring X1 is optionally replaced with a C1-6 alkyl group, a C1-6 halo-alkyl group, a cyano group, a nitro group, a C1-6 alkoxy group, or a halogen atom; and * represents an asymmetric carbon atom].
Claims11
A method for producing a racemate of a compound represented by Formula (1), comprising bringing a transition metal catalyst into contact with an optically active form of the compound represented by Formula (1):
- [in Formula (1),
- a ring X1 represents an aromatic ring;
- R1 represents a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C1-6 halo-alkyl group;
- R2 is a group different from R1 and represents a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C1-6 halo-alkyl group, or R2 and the ring X1 are bonded to each other to form a ring;
- a hydrogen atom(s) of the ring X1 is optionally replaced with a C1-6 alkyl group, a C1-6 halo-alkyl group, a cyano group, a nitro group, a C1-6 alkoxy group, or a halogen atom;
- and
- * represents an asymmetric carbon atom].
A method for racemizing a compound represented by Formula (1), comprising
- bringing a transition metal catalyst into contact with an optically active form of the compound represented by Formula (1):
- [in Formula (1),
- a ring X1 represents an aromatic ring;
- R1 represents a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C1-6 halo-alkyl group;
- R2 is a group different from R1 and represents a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C1-6 halo-alkyl group, or R2 and the ring X1 are bonded to each other to form a ring;
- a hydrogen atom(s) of the ring X1 is optionally replaced with a C1-6 alkyl group, a C1-6 halo-alkyl group, a cyano group, a nitro group, a C1-6 alkoxy group, or a halogen atom;
- and
- * represents an asymmetric carbon atom].
Dependencies are inferred from the claim text.