3,3-Dimethylbutanal → 4-{[3,3-dimethylbutylidene]amino}-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 3,3-dimethylbutanal (0.5 g, 5.0 mmol) in N,N-dimethylacetamide (3 mL) in a sealed tube at 130° C. for 40 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 (0.072 g, 77%).

Provenance & Evidence