4-Chlorobenzoyl chloride → 7-Chloro-3-[(4-chloro-benzoylamino)-methyl]-4-oxo-1-phenyl-1,4-dihydro-quinoline-2-carboxylic acid methyl ester

HRID 1887924Notes

Reaction equation

Cl.[CH3:2][O:3][C:4]([C:6]1[N:7]([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[C:8]2[C:13]([C:14](=[O:18])[C:15]=1[CH2:16][NH2:17])=[CH:12][CH:11]=[C:10]([Cl:19])[CH:9]=2)=[O:5].[Cl:26][C:27]1[CH:35]=[CH:34][C:30]([C:31](Cl)=[O:32])=[CH:29][CH:28]=1.C(N(CC)C(C)C)(C)C>C(Cl)Cl>[CH3:2][O:3][C:4]([C:6]1[N:7]([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[C:8]2[C:13]([C:14](=[O:18])[C:15]=1[CH2:16][NH:17][C:31](=[O:32])[C:30]1[CH:34]=[CH:35][C:27]([Cl:26])=[CH:28][CH:29]=1)=[CH:12][CH:11]=[C:10]([Cl:19])[CH:9]=2)=[O:5]

Participants

Conditions

Temperature: 0 °C

Procedure

In a 50 mL round-bottomed flask, 3-aminomethyl-7-chloro-4-oxo-1-phenyl-1,4-dihydro-quinoline-2-carboxylic acid methyl ester hydrochloride (intermediate I) (0.30 g, 0.791 mmol) and 4-chlorobenzoyl chloride (138 mg, 0.791 mmol) were added at 0° C. to 15 mL CH2Cl2. The reaction was stirred at 0° C. for 5 min. and then N,N-diisopropylethylamine (511 mg, 3.96 mmol) was added. The reaction mixture was stirred at 0° C. for 1 hr. The mixture was concentrated to dryness and then purified by flash chromatography using 40% ethyl acetate-hexanes. The desired product 7-chloro-3-[(4-chloro-benzoylamino)-methyl]-4-oxo-1-phenyl-1,4-dihydro-quinoline-2-carboxylic acid methyl ester (171 mg, 45%) was obtained as a white solid.

Workup

stirringThe reaction mixture was stirred at 0° C. for 1 hr
concentrationThe mixture was concentrated to dryness
custompurified by flash chromatography

Sources & evidence

ORD record: ord-c149d24917c640878ec46fd4c1b96045
Source dataset: uspto-grants-2013_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08501732B2

Reaction notes

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