Reaction equation
NC1N(C2C=CC(OC)=CC=2)C(C2C=CC=C(NS(C)(=O)=O)C=2)[N:5]=[C:4]2[O:27]C=C[C:3]=12.C(O[C:34](=[O:36])[CH3:35])(=O)C.[C:37]1(C)[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1>>[C:4]([NH:5][C:37]1[CH:38]=[CH:39][C:40]([C:34](=[O:36])[CH3:35])=[CH:41][CH:42]=1)(=[O:27])[CH3:3]Participants
4
Procedure
To a suspension of 4-aminoacetophenone 1 (74 g, 547 mmol) in toluene (700 mL), acetic anhydride (56 mL 593 mmol) was added dropwise at room temperature. Soon after added all of acetic anhydride, the reaction mixture became a clear solution and then rapidly began to make a white precipitation. The precipitation were filtrated and washed with a small amount of toluene then dried under reduced pressure to afford 2 as a white solid (93 g, 960% yield): MS(ES) m/e 178 [M+H].
Workup
- additionwas added dropwise at room temperature
- customa white precipitation
- customThe precipitation
- filtrationwere filtrated
- washwashed with a small amount of toluene
- customthen dried under reduced pressure
Sources & evidence
- ORD record
- ord-9efe432e3cfc48a8b3a4a1bcd676ef47
- Source dataset
- uspto-grants-2008_09
- Patent number
- US07427623B2
Linked notes
Loading…