5-Amino-1,2-dihydroquinolin-2-one → 5-{[(2R*,4R*)-4-(3,4-difluoro-2-methoxyphenyl)-2-hydroxy-2-(trifluoromethyl)hexylidene]amino}quinolin-2(1H)-one

HRID 1362507Notes

Reaction equation

HRID 1362507 reaction equation
[F:1][C:2]1[C:3]([O:21][CH3:22])=[C:4]([C@H:9]([CH2:19][CH3:20])[CH2:10][C@:11]([OH:18])([C:14]([F:17])([F:16])[F:15])[CH:12]=O)[CH:5]=[CH:6][C:7]=1[F:8].[NH2:23][C:24]1[CH:33]=[CH:32][CH:31]=[C:30]2[C:25]=1[CH:26]=[CH:27][C:28](=[O:34])[NH:29]2>[O-]CC.[O-]CC.[O-]CC.[O-]CC.[Ti+4]>[F:1][C:2]1[C:3]([O:21][CH3:22])=[C:4]([C@H:9]([CH2:19][CH3:20])[CH2:10][C@:11]([OH:18])([C:14]([F:17])([F:16])[F:15])[CH:12]=[N:23][C:24]2[CH:33]=[CH:32][CH:31]=[C:30]3[C:25]=2[CH:26]=[CH:27][C:28](=[O:34])[NH:29]3)[CH:5]=[CH:6][C:7]=1[F:8]

Participants

4

Reactant 2

HCID 157190785-Amino-1,2-dihydroquinolin-2-oneHCID 86615326(2R*,4R*)-4-(3,4-difluoro-2-methoxyphenyl)-2-hydroxy-2-(trifluoromethyl)hexanal

Product 1

HCID 687721215-{[(2R*,4R*)-4-(3,4-difluoro-2-methoxyphenyl)-2-hydroxy-2-(trifluoromethyl)hexylidene]amino}quinolin-2(1H)-one

Reagents, catalysts & solvents 1

HCID 76524Titanium tetraethoxideCatalyst

Procedure

In the same way as in Example 29, 210 mg (0.64 mmol) of (2R*,4R*)-4-(3,4-difluoro-2-methoxyphenyl)-2-hydroxy-2-(trifluoromethyl)hexanal, 132 mg (0.97 mmol) of 5-aminoquinolin-2(1H)-one and 0.27 ml of titanium tetraethoxide are reacted to give 5-{[(2R*,4R*)-4-(3,4-difluoro-2-methoxyphenyl)-2-hydroxy-2-(trifluoromethyl)hexylidene]amino}quinolin-2(1H)-one. 234 mg of crude imine are cyclized in the same way as in Example 29 at −40° C. with 5 ml (5 mmol) of 1 M boron tribromide solution to give the desired product. Column chromatography on silica gel (hexane/ethyl acetate 33-100%) yields 25 mg of the desired product.

Sources & evidence

ORD record
ord-9647a76f456a4340850040aeb0809d07
Source dataset
uspto-grants-2011_02
Patent number
US07880042B2

Reaction notes

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