Triethylamine → 4-(5-methyl-4-oxo-4,5-dihydro-3H-imidazo[4,5-c]quinolin-2-yl)-piperidine-1-carboxylic acid benzyl ester

HRID 2244824ノート

反応式

HRID 2244824 の反応式
[NH2:1][C:2]1[C:3](=[O:14])[N:4]([CH3:13])[C:5]2[C:10]([C:11]=1[NH2:12])=[CH:9][CH:8]=[CH:7][CH:6]=2.CCN(CC)CC.[CH2:22]([O:29][C:30]([N:32]1[CH2:37][CH2:36][CH:35]([C:38](Cl)=O)[CH2:34][CH2:33]1)=[O:31])[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1>C(Cl)Cl>[CH2:22]([O:29][C:30]([N:32]1[CH2:37][CH2:36][CH:35]([C:38]2[NH:1][C:2]3[C:3](=[O:14])[N:4]([CH3:13])[C:5]4[CH:6]=[CH:7][CH:8]=[CH:9][C:10]=4[C:11]=3[N:12]=2)[CH2:34][CH2:33]1)=[O:31])[C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1

参加物

5

反応物 3

HCID 8471TriethylamineHCID 2776270Benzyl 4-(chlorocarbonyl)piperidine-1-carboxylateHCID 451232943,4-Diamino-1-methylquinolin-2(1H)-one

生成物 1

HCID 587884444-(5-methyl-4-oxo-4,5-dihydro-3H-imidazo[4,5-c]quinolin-2-yl)-piperidine-1-carboxylic acid benzyl ester収率 18.1%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a suspension of 3,4-diamino-1-methyl-1H-quinolin-2-one (0.60 g, 1.59 mmol) in CH2Cl2 (10 mL) were added Et3N (0.177 g, 1.74 mmol) and 4-chlorocarbonyl-piperidine-1-carboxylic acid benzyl ester (0.45 g, 1.60 mmol) at 0° C. The reaction mixture was stirred at room temperature for 1.5 h, and then excess acid chloride was quenched by addition of MeOH. The mixture was concentrated in vacuo, and the amide intermediate was taken up in 5 mL of HOAc and heated at reflux for 7 h. After cooling to room temperature, the solvent was evaporated under reduced pressure. The cyclized product was purified by flash chromatography, to give 4-(5-methyl-4-oxo-4,5-dihydro-3H-imidazo[4,5-c]quinolin-2-yl)-piperidine-1-carboxylic acid benzyl ester (0.12 g, 18% yield). 1H-NMR (DMSO): δ 8.08 (m, 1H), 7.60 (m, 1H), 7.43 (m, 1H), 7.32 (m, 6H), 5.02 (s, 2H), 3.91 (m, 2H), 3.34 (s, 3H), 2.81 (m, 3H), 1.78 (m, 2H), 1.39 (m, 2H). MS: calculated for C24H24N4O3+H 417.2; found: 417.4.

後処理

  1. customexcess acid chloride was quenched by addition of MeOH
  2. concentrationThe mixture was concentrated in vacuo
  3. temperatureheated
  4. temperatureat reflux for 7 h
  5. temperatureAfter cooling to room temperature
  6. customthe solvent was evaporated under reduced pressure
  7. customThe cyclized product was purified by flash chromatography

出典と根拠

ORDレコード
ord-21401eccdb68486cb7d3f12535fff39d
出典データセット
uspto-grants-2010_03
特許番号
US07678909B1

反応ノート

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