Ethylamine → HCID 66936229, compound

Participants

Reaction Conditions

Reaction Steps

Methyl 7,8-dimethyl-3-methylamino-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxylate hydrochloride (W1.220; 1.3 g) was dissolved in methanol (30 ml), cooled to 0° C., slowly admixed dropwise with ethylamine (11.44 ml; 2 M in THF) and stirred at 0° C. for 6 h. Then four further equivalents of ethylamine were added and the mixture was left to stand at RT over the weekend. Subsequently, the mixture was concentrated and purified using silica gel (40 g cartridge, dichloromethane/methanol gradient of 0-20% in 60 min). 1.12 g of the title compound were obtained. LC-MS rt: 0.81 min [M+H]+: 249.1 (met. b)

Provenance & Evidence