Piperazine → HCID 11641246, compound

Participants

Reaction Steps

0.42 g (1.0 mmol) 4-chloro-7-(3,4-dimethoxyphenyl)-9-methyl-2-propyl-pyrido-[3′,2′:4,5]thieno[3,2-d]pyrimidine and 0.37 g (4.3 mmol) piperazine in 8 ml tetrahydrofuran are stirred at room temperature for 4 h. Having removed the solvent, the residue is suspended in 10 ml water and sucked off. The residue is suspended in about 50 ml dichloromethane and filtrated. The filtrate is washed with a total of 30 ml water, dried on sodium sulfate and the solvent is removed. The residue is recrystallized from ethyl acetate. 0.17 g (37%) of the title substance is obtained.

Provenance & Evidence