Water → HCID 86745285, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4.2 parts of 3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one monohydrochloride, 6.9 parts of N-(3-pyrrolidinyl)-1-(4-thiazolylmethyl)-1H-benzimidazol-2-amine dihydrobromide, 9.7 parts of sodium carbonate, 0.1 parts of potassium iodide and 90 parts of N,N-dimethylacetamide was stirred for 1.5 hour at 100° C. After cooling, the reaction mixture was poured into 500 parts of water. The product was extracted three times with dichloromethane. The combined extracts were washed with water, dried, filtered and evaporated. The oily residue was converted into the (E)-2-butenedioate salt in 180 parts of 2-propanone and ethanol. The salt was filtered off and dried, yielding 6 parts (51.2%) of 6,7,8,9-tetrahydro-2-methyl-3-[2-[3-[[1-(4-thiazolylmethyl)-1H-benzimidazol-2-yl]amino]-1-pyrrolidinyl]ethyl]-4H-pyrido[1,2-a]pyrimidin-4-one (E)-2-butenedioate (2:5); mp. 148.1° C. (compound 59).

Provenance & Evidence