Triethylamine → 1-Benzyl-4-(2,2-dimethyl-propionyloxy)-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid ethyl ester

HRID 642413ノート

反応式

HRID 642413 の反応式
[CH2:1]([O:3][C:4]([C:6]1[C:7]([OH:22])=[C:8]2[CH:14]=[CH:13][N:12]([CH2:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[C:9]2=[CH:10][N:11]=1)=[O:5])[CH3:2].[C:23](Cl)(=[O:28])[C:24]([CH3:27])([CH3:26])[CH3:25].C(N(CC)CC)C>CN(C)C1C=CN=CC=1.ClCCl.CCOC(C)=O>[CH2:1]([O:3][C:4]([C:6]1[C:7]([O:22][C:23](=[O:28])[C:24]([CH3:27])([CH3:26])[CH3:25])=[C:8]2[CH:14]=[CH:13][N:12]([CH2:15][C:16]3[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=3)[C:9]2=[CH:10][N:11]=1)=[O:5])[CH3:2]

参加物

7

反応物 3

HCID 8471TriethylamineHCID 62493Pivaloyl chlorideHCID 684277721-Benzyl-4-hydroxy-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid ethyl ester

生成物 1

HCID 684273231-Benzyl-4-(2,2-dimethyl-propionyloxy)-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid ethyl ester収率 93.7%

試薬・触媒・溶媒 3

HCID 142844-(Dimethylamino)pyridine触媒HCID 6344Dichloromethane溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A mixture of 1-benzyl-4-hydroxy-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid ethyl ester (500 mg, 1.68 mmol), pivaloyl chloride (0.250 mL, 2.02 mmol), 4-dimethylaminopyridine (21 mg, 0.168 mmol) and triethyl amine (0.468 mL, 3.36 mmol) in dichloromethane (5 mL) was stirred at room temperature for 1 h; then the reaction mixture was diluted with EtOAc, washed with saturated NaCl solution and subsequently the organic phase was dried over anhydrous sodium sulfate, filtered, concentrated and the residue was purified with column to give the desired product as a clear oil (599 mg, 93%). 1H NMR (200 MHz, CDCl3): δ (ppm)=8.62 (s, 1H), 7.31-7.20 (m, 6H), 6.53-6.51 (m, 1H), 5.40 (s, 2H), 4.41 (q, 2H, J=7.3 Hz), 1.47 (s, 9H), 1.41 (t, 3H, J=7.3 Hz).

後処理

  1. washwashed with saturated NaCl solution
  2. dry with materialsubsequently the organic phase was dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customthe residue was purified with column

出典と根拠

ORDレコード
ord-c21011174c7e44b4925144cbacb27c14
出典データセット
uspto-grants-2010_04
特許番号
US07696223B2

反応ノート

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