Pyridine → 2-[3-(3,3-Diethyl-ureido)-phenyl]-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester

HRID 1800930Notes

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.[CH2:31]([N:33]([CH2:37][CH3:38])[C:34](Cl)=[O:35])[CH3:32]>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:34]([N:33]([CH2:37][CH3:38])[CH2:31][CH3:32])=[O:35])[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 (648 mg, 2 mmol) in dichloromethane (5 mL) and pyridine (1 mL, 12 mmol) was added a solution of diethylcarbamyl chloride (0.28 mL, 2.2 mmol) in dichloromethane (2 mL) dropwise at 0° C. The reaction mixture was stirred at 25° C. for 16 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 2-[3-(3,3-diethyl-ureido)-phenyl]-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (846 mg, 100%) as a brown oil which was used for next step without further purification: LC/MS m/e calcd for C25H33N3O3 (M+H)+: 424.56, observed: 424.2.

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-973be182522c4e88b933c25f930b8cc9
Source dataset: uspto-grants-2013_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08344137B2

Reaction notes

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