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US 10,239,841 B2Granted
Method for producing pyrazole derivative
AssigneeAGC Inc.
InventorsYuichiro Ishibashi, Yosuke Ochi, Noriaki Miyake, Yusuke Yamazaki, Shota Shimizu
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Abstract
The invention relates to a production method of pyrazole derivative (6) by reacting compound (5) with an oxidant. wherein R1, R2, R3, X1, X2 and Z1 are as defined herein.
Claims20
A compound represented by formula (5a)
- wherein
- R12 is a methyl group or an ethyl group,
- R13 is a hydrogen atom, a methyl group or an ethyl group, and
- X11 and X12 are each independently a fluorine atom or a chlorine atom.
1 more element
A method of producing a compound represented by formula (5)
- which comprises
- reacting a compound represented by formula (1)
- with a compound represented by formula (2)
- to obtain a compound represented by formula (3)
- and
- reacting the compound represented by the formula (3) with a compound represented by formula (4a)
- R3—NHNH2 (4a)
- to obtain a compound represented by formula (5),
- wherein
- R1 is a hydrogen atom or a halogen atom,
- R2 is a C1-8 alkyl group,
- R3 is a hydrogen atom or a C1-8 alkyl group,
- X1 and X2 are each independently a fluorine atom or a chlorine atom,
- Z1 is a hydrogen atom or a C1-8 alkyl group,
- RA is NR5R6, and R5 and R6 are each independently a C1-8 alkyl group,
- Y1 is an oxygen atom,
- X3 is a halogen atom, and
- the wavy lines mean that the configuration of Z1 and RA relating to the double bond is E or Z.
15 more elements
A method of producing a compound represented by formula (5-1)
- which comprises
- reacting 1,1,2,2-tetrafluoro-N,N-dimethylethanamine with BF3 to obtain a compound represented by formula (1b-1)
- reacting the compound represented by formula (1b-1) with a compound represented by formula (2b-1)
- to obtain a compound represented by formula (3a-1)
- and
- reacting the compound represented by formula (3a-1) with methylhydrazine to obtain a compound represented by (5-1).
3 more elements
A method of producing a pyrazole derivative represented by formula (6)
- which comprises reacting a compound represented by formula (5)
- with an oxidant
- wherein
- R1 is a hydrogen atom or a halogen atom,
- R2 is a C1-8 alkyl group,
- R3 is a hydrogen atom or a C1-8 alkyl group,
- X1 and X2 are each independently a fluorine atom or a chlorine atom, and
- Z1 is a hydrogen atom or a C1-8 alkyl group.
5 more elements
Dependencies are inferred from the claim text.