N-bromobutanimide → 2-methoxyethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(1-phenyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-(2-methoxyethoxy)cyclohexanecarboxylate

HRID 334358노트

반응식

HRID 334358 반응식
[CH3:1][Si:2]([CH3:55])([CH3:54])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:46][O:47][CH2:48][CH2:49][Si:50]([CH3:53])([CH3:52])[CH3:51])[C:8]1[N:13]2[N:14]=[CH:15][C:16]([C:17]3[CH:18]=[N:19][N:20]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=4)[CH:21]=3)=[C:12]2[N:11]=[C:10]([CH:28]2[CH2:33][CH2:32][C:31]([O:41][CH2:42][CH2:43][O:44][CH3:45])([C:34]([O:36][CH2:37][CH2:38][O:39][CH3:40])=[O:35])[CH2:30][CH2:29]2)[CH:9]=1.C1C(=O)N([Br:63])C(=O)C1>CC#N>[CH3:55][Si:2]([CH3:1])([CH3:54])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:46][O:47][CH2:48][CH2:49][Si:50]([CH3:53])([CH3:52])[CH3:51])[C:8]1[N:13]2[N:14]=[CH:15][C:16]([C:17]3[CH:18]=[N:19][N:20]([C:22]4[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=4)[CH:21]=3)=[C:12]2[N:11]=[C:10]([CH:28]2[CH2:33][CH2:32][C:31]([O:41][CH2:42][CH2:43][O:44][CH3:45])([C:34]([O:36][CH2:37][CH2:38][O:39][CH3:40])=[O:35])[CH2:30][CH2:29]2)[C:9]=1[Br:63]

참가 물질

4

반응물 2

HCID 67184N-bromobutanimideHCID 665837282-methoxyethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-(1-phenyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-(2-methoxyethoxy)cyclohexanecarboxylate

생성물 1

HCID 866867372-methoxyethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(1-phenyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-(2-methoxyethoxy)cyclohexanecarboxylate수율 99.7%

시약·촉매·용매 1

HCID 6342Acetonitrile용매

실험 절차

To a solution of 2-methoxyethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-(1-phenyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-(2-methoxyethoxy)cyclohexanecarboxylate (2.28 g, 2.87 mmol) in CH3CN (50 mL) was added NBS (511 mg, 2.87 mmol) and stirred at rt for 30 min. Both TLC and LCMS showed complete conversion. All the volatiles were removed under reduced pressure and the residue was purified by a SiO2 column (0-30%, EtOAc/Hexanes, Rf=0.65 in 50% EtOAc) to afford 2-methoxyethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(1-phenyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-(2-methoxyethoxy)cyclohexanecarboxylate as a yellow oil (2.50 g). HPLC-MS TR=1.99 min (UV 254 nm, 3 min method); mass calculated for formula C40H61BrN6O7Si2 872.3, observed LCMS m/z 873.3 (M+H).

후처리

  1. customAll the volatiles were removed under reduced pressure
  2. customthe residue was purified by a SiO2 column (0-30%, EtOAc/Hexanes, Rf=0.65 in 50% EtOAc)

출처 및 근거

ORD 기록
ord-d8539f0a5ad842b89bee34071706c589
출처 데이터셋
uspto-grants-2014_11
특허 번호
US08883801B2

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