Cesium carbonate → N-[3-[5-chloro-2-(difluoromethoxy)phenyl]-1-(2-cyanoethyl)-1H-pyrazol-4-yl]pyrazolo[1,5-a]pyrimidine-3-carboxamide

HRID 529779ノート

反応式

HRID 529779 の反応式
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:25][CH:26]([F:28])[F:27])=[C:6]([C:8]2[C:12]([NH:13][C:14]([C:16]3[CH:17]=[N:18][N:19]4[CH:24]=[CH:23][CH:22]=[N:21][C:20]=34)=[O:15])=[CH:11][NH:10][N:9]=2)[CH:7]=1.Br[CH2:30][CH2:31][C:32]#[N:33].C([O-])([O-])=O.[Cs+].[Cs+]>CN(C)C=O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:25][CH:26]([F:28])[F:27])=[C:6]([C:8]2[C:12]([NH:13][C:14]([C:16]3[CH:17]=[N:18][N:19]4[CH:24]=[CH:23][CH:22]=[N:21][C:20]=34)=[O:15])=[CH:11][N:10]([CH2:30][CH2:31][C:32]#[N:33])[N:9]=2)[CH:7]=1

参加物

5

反応物 3

HCID 10796Cesium carbonateHCID 170203-BromopropionitrileHCID 178522413HCID 178522413、化合物

生成物 1

HCID 118522650N-[3-[5-chloro-2-(difluoromethoxy)phenyl]-1-(2-cyanoethyl)-1H-pyrazol-4-yl]pyrazolo[1,5-a]pyrimidine-3-carboxamide収率 57%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
65 °C

実験手順

A mixture of N-[3-[5-chloro-2-(difluoromethoxy)phenyl]-1H-pyrazol-4-yl]pyrazolo[1,5-a]pyrimidine-3-carboxamide (500 mg, 1.24 mmol), 3-bromopropanenitrile (412 mg, 3.08 mmol), Cs2CO3 (1.21 g, 3.70 mol) in N,N-dimethylformamide (15 mL) was purged with a gentle flow of nitrogen gas. The resulting mixture was stirred in a sealed tube at 65° C. for 16 then poured into water (200 mL). The crude product was collected by filtration and then purified by flash chromatography on silica eluting with ethyl acetate/petroleum ether (1:2). Appropriate fractions were collected and evaporated to afford N-[3-[5-chloro-2-(difluoromethoxy)phenyl]-1-(2-cyanoethyl)-1H-pyrazol-4-yl]pyrazolo[1,5-a]pyrimidine-3-carboxamide as a light yellow solid (320 mg, 57%). LCMS (Method 17) [M+H]+=458.1, RT=1.67 min.

後処理

  1. customwas purged with a gentle flow of nitrogen gas
  2. additionthen poured into water (200 mL)
  3. filtrationThe crude product was collected by filtration
  4. custompurified by flash chromatography on silica eluting with ethyl acetate/petroleum ether (1:2)
  5. customAppropriate fractions were collected
  6. customevaporated

出典と根拠

ORDレコード
ord-8bd7129dd7e740a7823eed2543a4eae2
出典データセット
uspto-grants-2016_05
特許番号
US09346815B2

反応ノート

読み込み中…