Diisopropylethylamine → ethyl 5-(2-bromo-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1-methyl-1H-pyrazole-4-carboxylate

HRID 1802249노트

반응식

HRID 1802249 반응식
[Br:1][C:2]1[N:11]=[C:5]2[CH:6]=[C:7]([NH2:10])[CH:8]=[CH:9][N:4]2[N:3]=1.[CH2:12]([O:14][C:15]([C:17]1[CH:18]=[N:19][N:20]([CH3:25])[C:21]=1[C:22](O)=[O:23])=[O:16])[CH3:13].CCCP(=O)=O.C(N(CC)C(C)C)(C)C>O1CCCC1>[CH2:12]([O:14][C:15]([C:17]1[CH:18]=[N:19][N:20]([CH3:25])[C:21]=1[C:22](=[O:23])[NH:10][C:7]1[CH:8]=[CH:9][N:4]2[N:3]=[C:2]([Br:1])[N:11]=[C:5]2[CH:6]=1)=[O:16])[CH3:13]

참가 물질

6

반응물 4

HCID 81531DiisopropylethylamineHCID 16167369Propylphosphoric anhydrideHCID 252475674-(Ethoxycarbonyl)-1-methyl-1H-pyrazole-5-carboxylic acidHCID 677745572-Bromo-[1,2,4]triazolo[1,5-a]pyridin-7-amine

생성물 1

HCID 67775496ethyl 5-(2-bromo-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1-methyl-1H-pyrazole-4-carboxylate수율 82.7%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

A mixture of 2-bromo-[1,2,4]triazolo[1,5-a]pyridin-7-amine (2.39 g, 11.2 mmol), 4-(ethoxycarbonyl)-1-methyl-1H-pyrazole-5-carboxylic acid (2.22 g, 11.2 mmol), propylphosphonic anhydride (50% in ethyl acetate, 16.5 ml, 28.0 mmol) and N,N-diisopropylethylamine (5.72 ml, 33.7 mmol) in tetrahydrofuran (80 ml) was refluxed for 18 hours under argon atmosphere. The solvent was evaporated and the resulting yellowish oil was triturated with sat. sodium hydrogencarbonate solution. The precipitated solid was filtered off, washed with water 4 times and dried in vacuo affording 5-(2-bromo-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1-methyl-1H-pyrazole-4-carboxylic acid ethyl ester (3.64 g, 82.5%) as a light yellow solid. mp: 177-180° C., MS: m/z=393.0/395.0 (M+H+)

후처리

  1. temperaturewas refluxed for 18 hours under argon atmosphere
  2. customThe solvent was evaporated
  3. customthe resulting yellowish oil was triturated with sat. sodium hydrogencarbonate solution
  4. filtrationThe precipitated solid was filtered off
  5. washwashed with water 4 times
  6. customdried in vacuo

출처 및 근거

ORD 기록
ord-89a362b08e7e4e50b4380b5548f4dee0
출처 데이터셋
uspto-grants-2013_01
특허 번호
US08349824B2

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