Cyclobutanone → 4-(cyclobutylideneamino)-6-(1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-7-hydroxythieno[3,2-b]pyridin-5(4H)-one

Participants

Reaction Conditions

Reaction Steps

The product of Example 268D (0.10 g, 0.27 mmol) was reacted with cyclobutanone (1.0 g, 14.3 mmol) in N,N-dimethylacetamide (2 mL) in a sealed tube at 135° C. for 60 minutes in a microwave reactor. The reaction was cooled to 25° C. and concentrated under vacuum. The resulting residue was triturated with diethyl ether and filtered to give the title compound (0.086 g 77%).

Provenance & Evidence