Sodium hydride → tert-Butyl 4-(4-(1,1,1,3,3,3-hexafluoro-2-hydroxypropan-2-yl)benzyl)-3-oxopiperazine-1-carboxylate

HRID 1807780ノート

反応式

HRID 1807780 の反応式
[O:1]=[C:2]1[NH:7][CH2:6][CH2:5][N:4]([C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:3]1.[H-].[Na+].Br[CH2:18][C:19]1[CH:24]=[CH:23][C:22]([C:25]([OH:34])([C:30]([F:33])([F:32])[F:31])[C:26]([F:29])([F:28])[F:27])=[CH:21][CH:20]=1>CN1CCCC1=O.C(OCC)(=O)C>[F:27][C:26]([F:28])([F:29])[C:25]([C:22]1[CH:23]=[CH:24][C:19]([CH2:18][N:7]2[CH2:6][CH2:5][N:4]([C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:3][C:2]2=[O:1])=[CH:20][CH:21]=1)([OH:34])[C:30]([F:31])([F:33])[F:32]

参加物

6

反応物 3

HCID 24758Sodium hydrideHCID 3157178Tert-butyl 3-oxopiperazine-1-carboxylateHCID 235273962-[4-(Bromomethyl)phenyl]-1,1,1,3,3,3-hexafluoropropan-2-ol

生成物 1

HCID 86638570tert-Butyl 4-(4-(1,1,1,3,3,3-hexafluoro-2-hydroxypropan-2-yl)benzyl)-3-oxopiperazine-1-carboxylate収率 31.6%

試薬・触媒・溶媒 2

HCID 8857Ethyl Acetate溶媒HCID 13387N-methyl-2-pyrrolidone溶媒

実験手順

To a stirring solution of tert-butyl 3-oxopiperazine-1-carboxylate (9.99 mmol, 2 g) in dry N-methyl-2-pyrrolidinone (2 mL) was added sodium hydride (30.0 mmol, 1.198 g). The mixture was stirred at room temperature under nitrogen for 20 min before the addition of 2-(4-(bromomethyl)phenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (10.99 mmol, 3.70 g). The mixture was stirred for a further 14 hours. The reaction mixture was diluted with ethyl acetate (100 mL) and washed with water (4×75 mL). The organic phase was dried over magnesium sulfate, filtered and the filtrate concentrated. The resulting residue was purified by column chromatography on silica gel (eluting with dichloromethane—3.5% methanol/96.5% dichloromethane gradient) to afford the title compound (1.44 g).

後処理

  1. washwashed with water (4×75 mL)
  2. dry with materialThe organic phase was dried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationthe filtrate concentrated
  5. customThe resulting residue was purified by column chromatography on silica gel (eluting with dichloromethane—3.5% methanol/96.5% dichloromethane gradient)

出典と根拠

ORDレコード
ord-ab93eafb8d0e47a8ac3a79fed7a1bf93
出典データセット
uspto-grants-2013_01
特許番号
US08357679B2

反応ノート

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