Ethanol → N-(cyclopropylmethyl)-5-(3-((2,5-dioxoimidazolidin-4-ylidene)methyl)pyrazolo[1,5-a]pyrimidin-5-yl)thiophene-2-carboxamide

Participants

Reaction Conditions

Reaction Steps

To the reaction flask, N-(cyclopropylmethyl)-5-(3-formylpyrazolo[1,5-a]pyrimidin-5-yl)thiophene-2-carboxamide (10 mg, 0.030 mmol) was added to ethanol (0.5 mL) along with hydantoin (3 mg, 0.03 mmol) and piperidine (3 uL, 0.03 mmol). The reaction was heated at 80° C. for 1 hour in the microwave then cooled to room temperature and diluted with water. The solid was collected by filtration, washed with water, 50% ethanol/water, and then 100% ethanol. The material was dried under vacuum overnight. The product, N-(cyclopropylmethyl)-5-(3-((2,5-dioxoimidazolidin-4-ylidene)methyl)pyrazolo[1,5-a]pyrimidin-5-yl)thiophene-2-carboxamide, was recovered as a solid in 29% yield. LCMS (M+1=409)

Provenance & Evidence