Reaction equation
[F:1][CH:2]([F:11])[O:3][C:4]1[CH:10]=[CH:9][CH:8]=[CH:7][C:5]=1[NH2:6].[C:12]1([O:18]C2C=CC=CC=2)C=CC=[CH:14][CH:13]=1.CCCC(C)C>C(#N)C>[F:1][CH:2]([F:11])[O:3][C:4]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:5]=1[N:6]=[CH:14][CH:13]=[C:12]2[OH:18]Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
2-difluoromethoxyaniline (7.63 g) and the product from step a) were stirred in acetonitrile (100 ml) overnight. The solvent was removed by evaporation and the solid triturated with 4:1 isohexane/diethyl ether (200 ml) before filtering to give a light green solid. The solid was added portionwise to refluxing diphenylether (120 ml) and continued heating for a further 10 minutes before cooling. The solution was poured into isohexane (600 ml) and the solid filtered off to give the title compound (12.0 g).
Workup
- customThe solvent was removed by evaporation
- customthe solid triturated with 4:1 isohexane/diethyl ether (200 ml)
- filtrationbefore filtering
- customto give a light green solid
- additionThe solid was added portionwise
- temperaturecontinued heating for a further 10 minutes
- temperaturebefore cooling
- filtrationthe solid filtered off
Sources & evidence
- ORD record
- ord-4cc948c9ffb34d069ef25ec8ec3f8d63
- Source dataset
- uspto-grants-2012_01
- Patent number
- US08093278B2
Linked notes
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