3-Quinolinecarboxylic acid, 4-chloro-8-methoxy-, ethyl ester → 4-(1-Tert-butoxycarbonyl-piperidin-4-ylamino)-8-methoxy-quinoline-3-carboxylic acid ethyl ester
Reaction equation
[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[N:8][C:9]2[C:14]([C:15]=1Cl)=[CH:13][CH:12]=[CH:11][C:10]=2[O:17][CH3:18])=[O:5])[CH3:2].[C:19]([O:23][C:24]([N:26]1[CH2:31][CH2:30][CH:29]([NH2:32])[CH2:28][CH2:27]1)=[O:25])([CH3:22])([CH3:21])[CH3:20]>>[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[N:8][C:9]2[C:14]([C:15]=1[NH:32][CH:29]1[CH2:28][CH2:27][N:26]([C:24]([O:23][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:25])[CH2:31][CH2:30]1)=[CH:13][CH:12]=[CH:11][C:10]=2[O:17][CH3:18])=[O:5])[CH3:2]Participants
3
Procedure
4-Chloro-8-methoxy-quinoline-3-carboxylic acid ethyl ester (1.0 g, 3.77 mmol) was treated with 4-amino-piperidine-1-carboxylic acid tert-butyl ester following general procedure B to afford 4-(1-tert-butoxycarbonyl-piperidin-4-ylamino)-8-methoxy-quinoline-3-carboxylic acid ethyl ester (1.48 g). Thus obtained amino-ester (500 mg, 1.17 mmol) was subjected to reaction with 1-chloro-3-isocyanato-benzene according to general procedure C to furnish 4-[3-(3-chloro-phenyl)-7-methoxy-2,4-dioxo-3,4-dihydro-2H-pyrimido[5,4-c]quinolin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester (500 mg). LCMS: m/z 537 [M+1]+.
Sources & evidence
- ORD record
- ord-a4655b1c94994473b32956b38204d5aa
- Source dataset
- uspto-grants-2012_12
- Patent number
- US08329715B2
Reaction notes
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