3-Isocyanatopyridine → US9296747, Example 3
Reaction equation
[C:1]1([NH:7][C:8]2[N:9]=[CH:10][C:11]3[CH2:17][NH:16][CH2:15][CH2:14][C:12]=3[N:13]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[N:18]([C:21]1[CH:22]=[N:23][CH:24]=[CH:25][CH:26]=1)=[C:19]=[O:20]>C(Cl)Cl>[NH:7]([C:8]1[N:9]=[CH:10][C:11]2[CH2:17][N:16]([C:19]([NH:18][C:21]3[CH:22]=[N:23][CH:24]=[CH:25][CH:26]=3)=[O:20])[CH2:15][CH2:14][C:12]=2[N:13]=1)[C:1]1[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A solution of N-phenyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-2-amine, Intermediate 6 (75 mg, 0.33 mmol), 3-isocyanatopyridine (41.8 mg, 0.35 mmol) in CH2Cl2 (1.5 mL) was stirred at room temperature for 1 hour. After 1 hour the reaction mixture was diluted with CH2Cl2 and washed with sat. aqueous NaHCO3(aq). The organic phase was collected, dried and concentrated. The residue was dissolved in CH2Cl2 and washed with 3% aqueous LiCl solution and water. The organic phase was collected, dried and concentrated to give the title compound (45.9 mg).