3-(2,4-dichlorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)butyrimidic acid, ethyl ester dihydrochloride → 1-Carbamoyl-2-(2,4-dichlorophenyl)-3-(1H-1,2,4-triazol-1-yl)propan-2-ol

HRID 728330Notes

Reaction equation

Cl.Cl.[Cl:3][C:4]1[CH:9]=[C:8]([Cl:10])[CH:7]=[CH:6][C:5]=1[C:11]([OH:24])([CH2:18][N:19]1[CH:23]=[N:22][CH:21]=[N:20]1)[CH2:12][C:13](=[NH:17])[O:14]CC>ClC1C=CC=CC=1Cl>[C:13]([CH2:12][C:11]([C:5]1[CH:6]=[CH:7][C:8]([Cl:10])=[CH:9][C:4]=1[Cl:3])([OH:24])[CH2:18][N:19]1[CH:23]=[N:22][CH:21]=[N:20]1)(=[O:14])[NH2:17]

Participants

Conditions

Temperature: 178 °C

Procedure

3-(2,4-Dichlorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)butyrimidic acid, ethyl ester dihydrochloride (3.42 g) was suspended in 1,2-dichlorobenzene (35 ml) and the mixture was heated to the reflux temperature of the solvent [178° C.). After refluxing for five minutes, a solution was obtained. Refluxing was then continued for an additional 10 minutes. The reaction mixture was cooled, evaporated, and the resulting gum was triturated with hexane and heated with acetone. On cooling a cream-colored granular solid was formed which was filtered to yield the title compound as a solvate (1.26 g). On standing overnight in a refrigerator some further solvated product precipitated (0.62 g). After drying at 80° C. for 6 hours to remove the solvent the pure (unsolvated) title compound was obtained, yield 1.5 g, m.p. 144°-145° C.

Workup

temperatureAfter refluxing for five minutes
customa solution was obtained
temperatureRefluxing
temperatureThe reaction mixture was cooled
customevaporated
customthe resulting gum was triturated with hexane
temperatureheated with acetone
temperatureOn cooling a cream-colored granular solid
customwas formed which
filtrationwas filtered

Sources & evidence

ORD record: ord-5171067bab904d9589ba61d15c4e7183
Source dataset: uspto-grants-1991_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05047548

Reaction notes

Loading…