Water → HCID 10208636, compound

HRID 1374635Notes

Reaction equation

[Br:1][C:2]1[C:7]([O:8]C)=[CH:6][CH:5]=[CH:4][C:3]=1[C:10]([CH3:34])([CH3:33])[CH2:11][C:12]([OH:32])([C:28]([F:31])([F:30])[F:29])[C:13]([NH:15][C:16]1[CH:17]=[CH:18][C:19]2[C:24](=[O:25])[O:23][N:22]=[C:21]([CH3:26])[C:20]=2[CH:27]=1)=[O:14].B(Br)(Br)Br.O>ClCCl>[Br:1][C:2]1[C:7]([OH:8])=[CH:6][CH:5]=[CH:4][C:3]=1[C:10]([CH3:34])([CH3:33])[CH2:11][C:12]([OH:32])([C:28]([F:29])([F:30])[F:31])[C:13]([NH:15][C:16]1[CH:17]=[CH:18][C:19]2[C:24](=[O:25])[O:23][N:22]=[C:21]([CH3:26])[C:20]=2[CH:27]=1)=[O:14]

Participants

Conditions

Temperature: 0 °C

Procedure

78 mg of (+)-6-[4-(2-bromo-3-methoxyphenyl)-2-hydroxy-4-methyl-2-trifluoromethylvaleroylamino]-4-methyl-2,3-benzoxazin-1-one is mixed in 1.4 ml of dichloromethane at 0° C. with 0.71 ml of a 1 molar solution of boron tribromide in dichloromethane. After 2 hours of stirring at 0° C., the mixture is added to water, extracted with ethyl acetate, the organic phase is dried (Na2SO4) and concentrated by evaporation. After the residue is triturated with hexane, the title compound is obtained in crystalline form, flash point 226–231° C., [α]D=+91.1° (c=0.5 in chloroform)

Workup

extractionextracted with ethyl acetate
dry with materialthe organic phase is dried (Na2SO4)
concentrationconcentrated by evaporation
customAfter the residue is triturated with hexane

Sources & evidence

ORD record: ord-a64b74d0cd2f4a618477ebdcb1a86ace
Source dataset: uspto-grants-2007_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07166592B2

Reaction notes

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