Pyridine → 3,3-Dimethyl-2-{3-[(4-methyl-piperazine-1-carbonyl)-amino]-phenyl}-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester

HRID 1800916Notes

Reaction equation

[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[C:8]2[C:13](=[CH:14][CH:15]=1)[NH:12][CH:11]([C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([NH2:22])[CH:17]=1)[C:10]([CH3:24])([CH3:23])[CH2:9]2)=[O:5])[CH3:2].N1C=CC=CC=1.Cl.[CH3:32][N:33]1[CH2:38][CH2:37][N:36]([C:39](Cl)=[O:40])[CH2:35][CH2:34]1>ClCCl>[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[C:8]2[C:13](=[CH:14][CH:15]=1)[NH:12][CH:11]([C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([NH:22][C:39]([N:36]3[CH2:37][CH2:38][N:33]([CH3:32])[CH2:34][CH2:35]3)=[O:40])[CH:17]=1)[C:10]([CH3:23])([CH3:24])[CH2:9]2)=[O:5])[CH3:2]

Participants

Conditions

Temperature: 25 °C

Procedure

To a solution of 2-(3-amino-phenyl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (441 mg, 1.36 mmol) in dichloromethane (5 mL) and pyridine (1.1 mL, 13.6 mmol) was added 4-methyl-piperazine-1-carbonyl chloride hydrochloride (297 mg, 1.49 mmol) at 0° C. The reaction mixture was stirred at 25° C. for 5 h. Then the reaction mixture was extracted with dichloromethane (2×50 mL), washed with water, dried over anhydrous sodium sulfate and concentrated in vacuo to afford 3,3-dimethyl-2-{3-[(4-methyl-piperazine-1-carbonyl)-amino]-phenyl}-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (612 mg, 100%) as a brown oil which was used for next step without further purification: LC/MS m/e calcd for C26H34N4O3 (M+H)+: 451.59, observed: 451.2.

Workup

extractionThen the reaction mixture was extracted with dichloromethane (2×50 mL)
washwashed with water
dry with materialdried over anhydrous sodium sulfate
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-ddd1accf4bfd492fbe8a1333439107c6
Source dataset: uspto-grants-2013_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08344137B2

Reaction notes

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