Piperidine → 5-(t-Butoxycarbonylamino)-3-(8-hydroxyquinol-5-ylmethylen)-2-oxindole

反応式

[C:1]([O:5][C:6]([NH:8][C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[NH:14][C:13](=[O:18])[CH2:12]2)=[O:7])([CH3:4])([CH3:3])[CH3:2].[OH:19][C:20]1[C:29]2[N:28]=[CH:27][CH:26]=[CH:25][C:24]=2[C:23]([CH:30]=O)=[CH:22][CH:21]=1.N1CCCCC1>>[C:1]([O:5][C:6]([NH:8][C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[NH:14][C:13](=[O:18])[C:12]2=[CH:30][C:23]1[CH:22]=[CH:21][C:20]([OH:19])=[C:29]2[C:24]=1[CH:25]=[CH:26][CH:27]=[N:28]2)=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

反応物 3

HCID 8082Piperidine

HCID 2753638-Hydroxyquinoline-5-carbaldehyde

HCID 53971753tert-Butyl (2-oxoindolin-5-yl)carbamate

生成物 1

HCID 676013225-(t-Butoxycarbonylamino)-3-(8-hydroxyquinol-5-ylmethylen)-2-oxindole収率 79.3%

実験手順

To a solution of 5-t-butoxycarbonylamino-2-oxindole (630 mg, 2.5 mmol) and 8-hydroxyquinoline-5-carbaldehyde (450 mg, 2.6 mmol) in absolute alcohol was added piperidine (0.26 g, 2.6 mmol). The reaction was carried out at 80° C. for 3 h. The solvent was evaporated and the residue was purified by silica gel chromatography (eluant cyclohexane/ethylacetate 2:3) thus giving 800 mg of 5-(t-butoxycarbonylamino)-3-(8-hydroxyquinol-5-ylmethylen)-2-oxindole.