Dimethylformamide → 5-(5-Chloro-2-fluorophenylamino)-7-(2-morpholinopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde

HRID 2037042노트

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[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([F:28])=[C:6]([NH:8][C:9]2[CH:14]=[C:13]([NH:15][CH2:16][CH:17]([N:19]3[CH2:24][CH2:23][O:22][CH2:21][CH2:20]3)[CH3:18])[N:12]3[N:25]=[CH:26][CH:27]=[C:11]3[N:10]=2)[CH:7]=1.P(Cl)(Cl)(Cl)=O.CN([CH:37]=[O:38])C>>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([F:28])=[C:6]([NH:8][C:9]2[CH:14]=[C:13]([NH:15][CH2:16][CH:17]([N:19]3[CH2:20][CH2:21][O:22][CH2:23][CH2:24]3)[CH3:18])[N:12]3[N:25]=[CH:26][C:27]([CH:37]=[O:38])=[C:11]3[N:10]=2)[CH:7]=1

참가 물질

반응물 3

HCID 6228Dimethylformamide

HCID 24813Phosphorus oxychloride

HCID 58314469HCID 58314469, 화합물

생성물 1

HCID 583140035-(5-Chloro-2-fluorophenylamino)-7-(2-morpholinopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde수율 41%

실험 절차

In a reaction flask, N5-(5-chloro-2-fluorophenyl)-N7-(2-morpholinopropyl)pyrazolo[1,5-a]pyrimidine-5,7-diamine (84 mg, 0.21 mmol) was dissolved in DMF (0.9 mL) then phosphorous oxychloride (58 uL, 0.62 mmol) was added slowly at room temperature. The reaction mixture was allowed to stir at room temperature for 2 days then quenched by addition to 6N NaOH solution. The pH of the mixture was adjusted with 6N HCl to pH=7-9. The solid was recovered by filtration and washed with water. The product, 5-(5-chloro-2-fluorophenylamino)-7-(2-morpholinopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde, was purified by preparative TLC (5% acetone/dichloromethane) to yield 37 mg of the desired product (41% yield). LCMS (M+1=433)

후처리

customthen quenched by addition to 6N NaOH solution
filtrationThe solid was recovered by filtration
washwashed with water
customThe product, 5-(5-chloro-2-fluorophenylamino)-7-(2-morpholinopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde, was purified by preparative TLC (5% acetone/dichloromethane)

출처 및 근거

ORD 기록: ord-fe85ac5b30654090b59730985b14be45
출처 데이터셋: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
특허 번호: US08575177B2

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