Trifluoroacetic acid → 5-n-Butyl-2,4-dihydro-4-[(3-fluoro-2'-sulfamoylbiphenyl-4-yl)methyl]-2-[5-nitro-2-(trifluoromethyl)phenyl]-3H-1,2,4-triazol-3-one

HRID 1198699Notes

Reaction equation

[CH2:1]([C:5]1[N:6]([CH2:24][C:25]2[CH:30]=[CH:29][C:28]([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=3[S:37](=[O:44])(=[O:43])[NH:38]C(C)(C)C)=[CH:27][C:26]=2[F:45])[C:7](=[O:23])[N:8]([C:10]2[CH:15]=[C:14]([N+:16]([O-:18])=[O:17])[CH:13]=[CH:12][C:11]=2[C:19]([F:22])([F:21])[F:20])[N:9]=1)[CH2:2][CH2:3][CH3:4].FC(F)(F)C(O)=O.C1(OC)C=CC=CC=1>>[CH2:1]([C:5]1[N:6]([CH2:24][C:25]2[CH:30]=[CH:29][C:28]([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=3[S:37](=[O:44])(=[O:43])[NH2:38])=[CH:27][C:26]=2[F:45])[C:7](=[O:23])[N:8]([C:10]2[CH:15]=[C:14]([N+:16]([O-:18])=[O:17])[CH:13]=[CH:12][C:11]=2[C:19]([F:20])([F:22])[F:21])[N:9]=1)[CH2:2][CH2:3][CH3:4]

Participants

Reactant 3

HCID 6422Trifluoroacetic acid

HCID 7519Anisole

HCID 117648385-n-Butyl-4-[[2'-(N-t-butylsulfamoyl)-3-fluorobiphenyl-4-yl]methyl]-2,4-dihydro-2-[5-nitro-2-(trifluoromethyl)phenyl]-3H-1,2,4-triazol-3-one

Product 1

HCID 199393725-n-Butyl-2,4-dihydro-4-[(3-fluoro-2'-sulfamoylbiphenyl-4-yl)methyl]-2-[5-nitro-2-(trifluoromethyl)phenyl]-3H-1,2,4-triazol-3-oneYield 94%

Procedure

Reaction of 5-n-butyl-4-[[2'-(N-t-butylsulfamoyl)-3-fluorobiphenyl-4-yl]methyl]-2,4-dihydro-2-[5-nitro-2-(trifluoromethyl)phenyl]-3H-1,2,4-triazol-3-one (from Step A) with trifluoroacetic acid in the presence of anisole according to the procedure of Example 28, Step G, gave a 94% yield of the title compound as a pale yellow foam, homogeneous by TLC (95:5 CH2Cl2 --MeOH); mass spectrum (FAB) m/e 594 (M+1)+.

Sources & evidence

ORD record: ord-59aa8038e7ca4626bbf6f0a3bb471032
Source dataset: uspto-grants-1994_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05281614

Reaction notes

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