Trifluoroacetic acid → 5H,6H,7H,8H-pyrido(4,3-d)pyrimidine
Reaction equation
C(OC([N:8]1[CH2:17][CH2:16][C:11]2[N:12]=[CH:13][N:14]=[CH:15][C:10]=2[CH2:9]1)=O)(C)(C)C.FC(F)(F)C(O)=O>ClCCl>[N:12]1[C:11]2[CH2:16][CH2:17][NH:8][CH2:9][C:10]=2[CH:15]=[N:14][CH:13]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A solution of the product from Step B above (730 mg) in 10 mL of dichloromethane was cooled to 0° C. and treated dropwise with 5 mL of trifluoroacetic acid. The solution was warmed to room temperature and, after 1 h, concentrated under reduced pressure. The residue was dissolved in methanol and applied to an ion-exchange column (Varian Bond-Elut SCX, 5 g; preconditioned with methanol). The column was washed several times with methanol, and the amine product was eluted with 1.0M ammonia-methanol. The fractions containing product were concentrated under reduced pressure to afford the title compound as an orange oil. LC/MS 136.1 (M+1).