1-Butanol → 4-Hydroxy-1-oxo-6-(4-propoxy-phenoxy)-1,2-dihydro-isoquinoline-3-carboxylic acid butyl ester

反応式

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

参加物

反応物 4

HCID 2631-Butanol

HCID 313Hydrochloric Acid

HCID 23669364Sodium n-butylate

HCID 67110548[1,3-Dioxo-5-(4-propoxy-phenoxy)-1,3-dihydro-isoindol-2-yl]-acetic acid ethyl ester

生成物 1

HCID 671101594-Hydroxy-1-oxo-6-(4-propoxy-phenoxy)-1,2-dihydro-isoquinoline-3-carboxylic acid butyl ester

実験手順

A mixture of [1,3-dioxo-5-(4-propoxy-phenoxy)-1,3-dihydro-isoindol-2-yl]-acetic acid ethyl ester (2.485 g, 6.48 mmol), sodium butoxide, and butanol (14.3 mmol, 27 mL butanol) was heated at 90° C. to 100° C. for 2 h. Then the reaction mixture was allowed to cool to ambient temperature, acidified with 2 M HCl to pH 3-4, and extracted with EtOAc. The organic phase was then washed with water and saturated NaCl solution, dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue was purified by column chromatography to give the title compound (722 mg). ESI MS (m/z): 412 (M+H)+.