Methanesulfonic Acid → HCID 19001422, compound

Participants

Reaction Steps

1.5 g (0.0055 moles) of 3-(2-propyl-2H-tetrazol-5-yl)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine was dissolved in 20 ml of abs. ethanol under heating and stirring at reflux temperature. To the solution 0.6 ml (0.009 moles) of methanesulfonic acid was added dropwise. After a few minutes of stirring the reaction mixture was filtered and the filtrate was cooled down. The precipitating crystals were collected. 1.77 g (87.84%) of the title compound were obtained in the form of white crystals, m.p.: 154°-155° C.

Provenance & Evidence