Diisopropylethylamine → {1-[2-(4-Bromo-phenyl)-2-oxo-ethylcarbamoyl]-cyclobutyl}-carbamic acid tert-butyl ester

HRID 79743

反応式

HRID 79743 の反応式
Cl.[NH2:2][CH2:3][C:4]([C:6]1[CH:11]=[CH:10][C:9]([Br:12])=[CH:8][CH:7]=1)=[O:5].[C:13]([O:17][C:18]([NH:20][C:21]1([C:25](O)=[O:26])[CH2:24][CH2:23][CH2:22]1)=[O:19])([CH3:16])([CH3:15])[CH3:14].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C=O)C>[C:13]([O:17][C:18](=[O:19])[NH:20][C:21]1([C:25](=[O:26])[NH:2][CH2:3][C:4]([C:6]2[CH:11]=[CH:10][C:9]([Br:12])=[CH:8][CH:7]=2)=[O:5])[CH2:24][CH2:23][CH2:22]1)([CH3:16])([CH3:14])[CH3:15]

参加物

6

反応物 4

HCID 81531DiisopropylethylamineHCID 1512646Cyclobutanecarboxylic acid, 1-(((1,1-dimethylethoxy)carbonyl)amino)-HCID 27982162-Amino-1-(4-bromophenyl)ethan-1-one hydrochlorideHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)

生成物 1

HCID 66620541{1-[2-(4-Bromo-phenyl)-2-oxo-ethylcarbamoyl]-cyclobutyl}-carbamic acid tert-butyl ester

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

2-Amino-1-(4-bromo-phenyl)-ethanone HCl (5.8 g, 23 mmol) in DMF (75 mL) was treated with 1-tert-butoxycarbonylamino-cyclobutanecarboxylic acid (5.0 g, 23 mmol), HATU (9.7 g, 25 mmol), and DIPEA (12.9 mL, 34 mmol). The mixture was stirred for 18 hours and concentrated. The mixture was diluted with EtOAc (25 mL), and washed with saturated NaHCO3 (3 10 mL), H2O (10 mL), and brine (10 mL). The solution was dried over MgSO4 to afford crude {1-[2-(4-bromo-phenyl)-2-oxo-ethylcarbamoyl]-cyclobutyl}-carbamic acid tert-butyl ester, which was used without further purification. This material (6.54 g, 16 mmol) in xylenes (40 mL) was treated with ammonium acetate (6.1 g, 80 mmol). The reaction was stirred at 130° C. in a sealed tube for 18 hours. The mixture was concentrated and suspended in dicholormethane (100 mL) and washed with saturated NaHCO3 (50 mL). The solution was dried over MgSO4 to afford crude {1-[5-(4-bromo-phenyl)-1H-imidazol-2-yl]-cyclobutyl}-carbamic acid tert-butyl ester, which was used without further purification: MS (ESI) m/z 393 [M+H]+.

後処理

  1. concentrationconcentrated
  2. additionThe mixture was diluted with EtOAc (25 mL)
  3. washwashed with saturated NaHCO3 (3 10 mL), H2O (10 mL), and brine (10 mL)
  4. dry with materialThe solution was dried over MgSO4

出典と根拠

ORDレコード
ord-8229503f59be4c0081219d7853daf212
出典データセット
uspto-grants-2014_09
特許番号
US08841278B2

関連ノート

読み込み中…