Ethanol → tert-Butyl [(3S,5R)-1-(5-amino-2,3-dihydrofuro[2,3-b]pyridin-4-yl)-5-(trifluoromethyl)piperidin-3-yl]carbamate

HRID 1499507ノート

反応式

HRID 1499507 の反応式
[N+:1]([C:4]1[C:5]([N:13]2[CH2:18][C@H:17]([C:19]([F:22])([F:21])[F:20])[CH2:16][C@H:15]([NH:23][C:24](=[O:30])[O:25][C:26]([CH3:29])([CH3:28])[CH3:27])[CH2:14]2)=[C:6]2[CH2:12][CH2:11][O:10][C:7]2=[N:8][CH:9]=1)([O-])=O.[Cl-].[NH4+].CCO>[Fe].O>[NH2:1][C:4]1[C:5]([N:13]2[CH2:18][C@H:17]([C:19]([F:22])([F:20])[F:21])[CH2:16][C@H:15]([NH:23][C:24](=[O:30])[O:25][C:26]([CH3:28])([CH3:27])[CH3:29])[CH2:14]2)=[C:6]2[CH2:12][CH2:11][O:10][C:7]2=[N:8][CH:9]=1

参加物

6

反応物 3

HCID 702EthanolHCID 25517Ammonium ChlorideHCID 86726737HCID 86726737、化合物

生成物 1

HCID 86726738tert-Butyl [(3S,5R)-1-(5-amino-2,3-dihydrofuro[2,3-b]pyridin-4-yl)-5-(trifluoromethyl)piperidin-3-yl]carbamate収率 100.1%

試薬・触媒・溶媒 2

HCID 23925Iron触媒HCID 962Water溶媒

反応条件

温度
80 °C

実験手順

To a mixture of tert-butyl [(3S,5R)-1-(5-nitro-2,3-dihydrofuro[2,3-b]pyridin-4-yl)-5-(trifluoromethyl)piperidin-3-yl]carbamate (227.1 mg, 0.5252 mmol), iron powder (289.6 mg, 5.186 mmol) and ammonium chloride (462.4 mg, 8.644 mmol) was added EtOH (5.0 mL) followed by water (2.5 mL). The mixture was stirred at 80° C. for 1 h. The reaction mixture was filtered through a pad of diatomaceous earth. The diatomaceous earth pad was eluted with a 10% aqueous solution of K3PO4 (50 mL), and EtOAc (50 mL). The separated organic layer was washed with brine (50 mL), dried over Na2SO4, and concentrated to give the crude sub-title compound (211.5 mg). The crude product was used directly in the next step without further purification. LCMS calc. for C18H26F3N4O3 (M+H)+: m/z=403.2. found 403.2.

後処理

  1. filtrationThe reaction mixture was filtered through a pad of diatomaceous earth
  2. washThe diatomaceous earth pad was eluted with a 10% aqueous solution of K3PO4 (50 mL), and EtOAc (50 mL)
  3. washThe separated organic layer was washed with brine (50 mL)
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-e507af0df978425da03de9f85dcdc679
出典データセット
uspto-grants-2015_12
特許番号
US09200004B2

反応ノート

読み込み中…