Phosphorus oxychloride → 4-Chloro-5-phenyl-6-(4-(2-(pyrrolidin-1-yl)ethoxy)phenyl)furo[2,3-d]pyrimidine
Reaction equation
[C:1]1([C:7]2[C:15]3[C:14](=O)[NH:13][CH:12]=[N:11][C:10]=3[O:9][C:8]=2[C:17]2[CH:22]=[CH:21][C:20]([O:23][CH2:24][CH2:25][N:26]3[CH2:30][CH2:29][CH2:28][CH2:27]3)=[CH:19][CH:18]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.P(Cl)(Cl)([Cl:33])=O>C1C=CC=CC=1>[Cl:33][C:14]1[C:15]2[C:7]([C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)=[C:8]([C:17]3[CH:18]=[CH:19][C:20]([O:23][CH2:24][CH2:25][N:26]4[CH2:27][CH2:28][CH2:29][CH2:30]4)=[CH:21][CH:22]=3)[O:9][C:10]=2[N:11]=[CH:12][N:13]=1Participants
4
Procedure
Into a 50 mL round bottom flask was placed 5-phenyl-6-(4-(2-(pyrrolidin-1-yl)ethoxy)phenyl)furo[2,3-d]pyrimidin-4 (3H)-one 46 (132 mg, 0.329 mmol), and benzene (40 mL). The flask was equipped with a magnetic stir bar, dean-stark trap and a reflux condenser. The reaction was brought to reflux with some of the solvent having been distilled into the dean-stark trap. The reaction was allowed to cool to room temperature and phosphorous oxychloride (300 mg, 1.96 mmol) was added dropwise. The reaction was heated at reflux for 20 hours.