Trifluoroacetic acid → N-[(1R,6R)-6-Amino-2,2-difluorocyclohexyl]-4-[6-(difluoromethoxy)pyrazolo[1,5-a]pyrimidin-3-yl]-5-methylthiophene-2-carboxamide

HRID 1842609ノート

反応式

HRID 1842609 の反応式
C(OC(=O)[NH:7][C@@H:8]1[CH2:13][CH2:12][CH2:11][C:10]([F:15])([F:14])[C@@H:9]1[NH:16][C:17]([C:19]1[S:20][C:21]([CH3:37])=[C:22]([C:24]2[CH:25]=[N:26][N:27]3[CH:32]=[C:31]([O:33][CH:34]([F:36])[F:35])[CH:30]=[N:29][C:28]=23)[CH:23]=1)=[O:18])(C)(C)C.FC(F)(F)C(O)=O>ClCCl.[OH-].[Na+]>[NH2:7][C@H:8]1[C@@H:9]([NH:16][C:17]([C:19]2[S:20][C:21]([CH3:37])=[C:22]([C:24]3[CH:25]=[N:26][N:27]4[CH:32]=[C:31]([O:33][CH:34]([F:35])[F:36])[CH:30]=[N:29][C:28]=34)[CH:23]=2)=[O:18])[C:10]([F:14])([F:15])[CH2:11][CH2:12][CH2:13]1

参加物

5

反応物 2

HCID 6422Trifluoroacetic acidHCID 89750994tert-Butyl{(1R,2R)-2-[({4-[6-(difluoromethoxy)pyrazolo[1,5-a]pyrimidin-3-yl]-5-methylthiophen-2-yl}carbonyl)amino]-3,3-difluorocyclohexyl}carbamate

生成物 1

HCID 86692126N-[(1R,6R)-6-Amino-2,2-difluorocyclohexyl]-4-[6-(difluoromethoxy)pyrazolo[1,5-a]pyrimidin-3-yl]-5-methylthiophene-2-carboxamide収率 50.4%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒HCID 14798Sodium Hydroxide溶媒

実験手順

tert-Butyl{(1R,2R)-2-[({4-[6-(difluoromethoxy)pyrazolo[1,5-a]pyrimidin-3-yl]-5-methylthiophen-2-yl}carbonyl)amino]-3,3-difluorocyclohexyl}carbamate (0.900 g, 1.61 mmol) was dissolved in dichloromethane (8 mL) and trifluoroacetic acid (1.50 mL, 19.5 mmol) added. The reaction was stirred at room temperature for 16 h. After deprotection was complete, the mixture was diluted with 1N NaOH. The aqueous layer was extracted 3× with dichloromethane. The organic layers were combined, dried with sodium sulfate, and concentrated under reduced pressure. The residue was purified by column chromatography (0-16% MeOH/DCM) to give the title compound (0.371 g, 0.811 mmol). LRMS (APCI) calc'd for (C19H19F4N5O2S) [M+H]+, 458.1; found 458.0. 1H NMR (CDCl3, 500 MHz) δ 8.66 (d, J=2.5, 1H), 8.48 (d, J=2.5, 1H), 8.26 (s, 1H), 7.92 (s, 1H), 7.06 (d, J=8.8, 1H), 6.61 (t, J=71.5, 1H), 4.45 (m, 1H), 3.32 (m, 1H), 2.57 (s, 3H), 2.17 (m, J=8.6, 1H), 1.47-1.92 (m, 5H).

後処理

  1. extractionThe aqueous layer was extracted 3× with dichloromethane
  2. dry with materialdried with sodium sulfate
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by column chromatography (0-16% MeOH/DCM)

出典と根拠

ORDレコード
ord-fc013c79a300418a9e14d410be896551
出典データセット
uspto-grants-2015_02
特許番号
US08946237B2

反応ノート

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