m-Formylbenzonitrile → 3-({[6-(1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-7-hydroxy-5-oxothieno[3,2-b]pyridin-4(5H)-yl]imino}methyl)benzonitrile

Participants

Reaction Conditions

Reaction Steps

The product of Example 268D (0.100 g, 0.27 mmol) was reacted with 3-formylbenzonitrile (0.362 g, 2.75 mmol) in N,N-dimethylacetamide (3 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 (0.088 g, 69%).

Provenance & Evidence