Diethyl Ether → N-[4-chloro-2-methyl-6-[(methylamino)carbonyl]phenyl]-1(3-chloro-2-pyridinyl)-3-(2,2,2-trifluoroethoxy)-1H-pyrazole-5-carboxamide

HRID 1767089노트

반응식

HRID 1767089 반응식
[Cl:1][C:2]1[CH:3]=[C:4]([CH3:31])[C:5]2[N:10]=[C:9]([C:11]3[N:15]([C:16]4[C:21]([Cl:22])=[CH:20][CH:19]=[CH:18][N:17]=4)[N:14]=[C:13]([O:23][CH2:24][C:25]([F:28])([F:27])[F:26])[CH:12]=3)[O:8][C:7](=[O:29])[C:6]=2[CH:30]=1.[CH3:32][NH2:33].C(OCC)C>O1CCCC1>[Cl:1][C:2]1[CH:30]=[C:6]([C:7]([NH:33][CH3:32])=[O:29])[C:5]([NH:10][C:9]([C:11]2[N:15]([C:16]3[C:21]([Cl:22])=[CH:20][CH:19]=[CH:18][N:17]=3)[N:14]=[C:13]([O:23][CH2:24][C:25]([F:28])([F:27])[F:26])[CH:12]=2)=[O:8])=[C:4]([CH3:31])[CH:3]=1

참가 물질

5

반응물 3

HCID 3283Diethyl EtherHCID 6329MethylamineHCID 211133896-Chloro-2-[1-(3-chloro-2-pyridinyl)-3-(2,2,2-trifluoroethoxy)-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazin-4-one2회

생성물 1

HCID 11576978N-[4-chloro-2-methyl-6-[(methylamino)carbonyl]phenyl]-1(3-chloro-2-pyridinyl)-3-(2,2,2-trifluoroethoxy)-1H-pyrazole-5-carboxamide수율 21.8%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a suspension of the 6-chloro-2-[1-(3-chloro-2-pyridinyl)-3-(2,2,2-trifluoroethoxy)-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazin-4-one (i.e. precipitate product of Step E) (3.53 g, 7.5 mmol) in tetrahydrofuran (15 mL), methylamine (2.0 M solution in THF, 11 mL, 22 mmol) was added dropwise, and the resulting solution was stirred at room temperature for 45 minutes. Thin layer chromatography then showed the reaction to be complete. Ethyl ether (100 mL) was added, and the reaction mixture was stirred for 2 hours while a precipitate formed. The precipitate was collected by filtration and then recrystallized from acetonitrile to yield a white solid (0.82 g). A second crop of white solid (0.35 g) precipitated from the acetonitrile mother liquor and was collected by filtration. The initial ether/tetrahydrofuran mother liquor was concentrated to dryness, and the residual solid was recrystallized from acetonitrile to yield a third crop of white solid (0.95 g). The three crops were combined, totaling 2.12 g (after drying) of the title compound, isolated as a white solid, melting at 207–208° C.

후처리

  1. additionwas added dropwise
  2. customthe reaction
  3. stirringthe reaction mixture was stirred for 2 hours while a precipitate
  4. customformed
  5. filtrationThe precipitate was collected by filtration
  6. customrecrystallized from acetonitrile

출처 및 근거

ORD 기록
ord-6c73332e6340483e8c51382dd3546bf1
출처 데이터셋
uspto-grants-2007_06
특허 번호
US07232836B2

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