Chlorosuccinimide → 5-chloro-6-ethyl-2-phenyl-4(3H)-pyrimidinone
Reaction equation
[CH2:1]([C:3]1[N:8]=[C:7]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[NH:6][C:5](=[O:15])[CH:4]=1)[CH3:2].[Cl:16]N1C(=O)CCC1=O>C(O)(=O)C>[Cl:16][C:4]1[C:5](=[O:15])[NH:6][C:7]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[N:8][C:3]=1[CH2:1][CH3:2]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A stirred solution of 7.81 g (39.1 mmol) of 6-ethyl-2-phenyl-4(3H)-pyrimidinone and 5.80 g (43.4 mmol) of N-chlorosuccinimide in 100 mL of glacial acetic acid was heated at 90° C. for 4 h. The mixture was cooled, poured onto crushed ice and allowed to stand until the ice had melted. The mixture was filtered and the solid collected was washed with water and a little ether. The solid was dried in a vacuum oven at 50° C. to afford 7.99 g of 5-chloro-6-ethyl-2-phenyl-4(3H)-pyrimidinone (an intermediate for compound 172) as a white solid. 1H-NMR (d6-DMSO) 1.30(3H,t), 2.8(2H,q), 7.6(3H,m), 8.2(2H.m).