Pyridine → 5,5-Dimethyl-8-nitro-2,3,4,5-tetrahydro-benzo[b]azepine-1-carboxylic acid 4-nitro-phenyl ester

HRID 1687931ノート

反応式

HRID 1687931 の反応式
[CH3:1][C:2]1([CH3:16])[CH2:8][CH2:7][CH2:6][NH:5][C:4]2[CH:9]=[C:10]([N+:13]([O-:15])=[O:14])[CH:11]=[CH:12][C:3]1=2.N1C=CC=CC=1.Cl[C:24]([O:26][C:27]1[CH:32]=[CH:31][C:30]([N+:33]([O-:35])=[O:34])=[CH:29][CH:28]=1)=[O:25]>CN(C)C1C=CN=CC=1.ClCCCl>[N+:33]([C:30]1[CH:29]=[CH:28][C:27]([O:26][C:24]([N:5]2[CH2:6][CH2:7][CH2:8][C:2]([CH3:16])([CH3:1])[C:3]3[CH:12]=[CH:11][C:10]([N+:13]([O-:15])=[O:14])=[CH:9][C:4]2=3)=[O:25])=[CH:32][CH:31]=1)([O-:35])=[O:34]

参加物

6

反応物 3

HCID 1049PyridineHCID 821294-Nitrophenyl chloroformateHCID 574702565,5-dimethyl-8-nitro-2,3,4,5-tetrahydro-1H-benzo[b]azepine

生成物 1

HCID 866340585,5-Dimethyl-8-nitro-2,3,4,5-tetrahydro-benzo[b]azepine-1-carboxylic acid 4-nitro-phenyl ester収率 46%

試薬・触媒・溶媒 2

HCID 142844-(Dimethylamino)pyridine触媒HCID 111,2-Dichloroethane溶媒

実験手順

5,5-Dimethyl-8-nitro-2,3,4,5-tetrahydro-1H-benzo[b]azepine (0.797 g, 3.62 mmol), Pyridine (6.310 mL, 3.83 mmol) and 4-Dimethylaminopyridine (21 mg, 0.17 mmol) were dissolved in anhydrous 1,2-Dichloroethane (5.0 mL) before adding p-Nitrophenyl Chloroformate (0.541 g, 2.68 mmol). The reaction was stirred at room temperature for 41 hours and then concentrated under reduced pressure. The residue was purified by normal phase chromatography to yield an off-white solid, 5,5-Dimethyl-8-nitro-2,3,4,5-tetrahydro-benzo[b]azepine-1-carboxylic acid 4-nitro-phenyl ester (0.475 g, 46%). LCMS: m/z=386.07 (M+H+). 1H NMR (400 MHz, CDCl3) δ 8.21 (m, 4H), 7.65 (d, 1H, J=8.8 Hz), 7.42 (m, 1H), 7.23 (m, 1H), 4.53 (m, 1H), 2.87 (m, 1H), 2.32 (m, 1H), 1.69 (m, 5H), 1.34 (m, 4H).

後処理

  1. concentrationconcentrated under reduced pressure
  2. customThe residue was purified by normal phase chromatography

出典と根拠

ORDレコード
ord-5616627e07884ce7aae251f08df090c8
出典データセット
uspto-grants-2012_04
特許番号
US08148391B2

反応ノート

読み込み中…