HCID 19097735, compound → 5-Amino-2-(2-propoxyphenyl)-4(3H)-pyrimidinone

Participants

Reaction Steps

A mixture of 5-nitro-2-(2-propoxyphenyl)-pyrimidin-4(3H)-one (4.34 g) in methanol (120 ml) was treated with hydrogen at atmospheric pressure and ambient temperature in the presence of 10% palladium on carbon (170 mg) for five hours. The reaction mixture was filtered and the filtrate was evaporated under reduced pressure affording a dark oily residue. This was eluted from a silica column with chloroform and the combined fractions containing product were evaporated under reduced pressure to afford the crude title compound as a dark yellow solid, 1.69 g. This was recrystallised from isopropylacetate, then dissolved in boiling 2 Normal hydrochloric acid, and the filtered, cooled solution was washed with chloroform. The acidic solution was neutralised with potassium carbonate which afforded a pale yellow solid, 600 mg, which was recrystallised from acetonitrile to afford the title compound, 250 mg, m.p. 157°-158° C.

Provenance & Evidence