8-Isopropoxy-[1,5]naphthyridine-2-carbaldehyde → HCID 178458598, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 2-(trans)-phenylcyclopylamino-thiazol-4-one (76.0 mg, 0.32 mmol) (see Example 3) AcONa (160 mg, 1.95 mmol), and 8-isopropoxy-[1,5]naphthyridine-2-carbaldehyde (77.8 mg, 0.36 mmol) (prepared as described below) in a sealed tube was added AcOH (0.4 mL). The reaction mixture was heated to 100° C. (oil bath) for 4 hrs. The reaction mixture was then cooled to r.t. and triturated with water. The solid was collected by filtration and washed with water, acetone and ether to give 5-(8-isopropoxy-[1,5]naphthyridin-2-ylmethylene)-2-(2-phenyl-cyclopropylamino)-thiazol-4-one as a yellowish solid (101.5 mg, 73.7%). HR-ES (+) m/e calcd for C24H22N4O2S (M+H)+ 431.1536. found 431.1537.

Provenance & Evidence