Maleic Acid → HCID 69497880, compound

Participants

Reaction Steps

To a suspension of lithium aluminum hydride (0.55 g) in THF was added aluminum chloride (0.63 g) and the mixture was stirred at room temperature for 1 hr. The reaction mixture was made to become 4° C. and a solution of (S)-4-(8-(2-hydroxy-3-(4-(naphthalen-2-yl)piperidino)propyloxy)-2H-chromen-3-ylcarbonyl)morpholine (2.5 g) in THF (50 ml) was added dropwise. The mixture was stirred for 30 min and hydrous THF was added. The mixture was further stirred for 30 min at room temperature and the precipitated insoluble matter was filtered off through celite. The solvent was evaporated under reduced pressure to give a brown oil. This was dissolved in ethanol and maleic acid was added. The precipitated crystals were collected by filtration and dried to give the title compound (1.3 g) as pale-yellow crystals, melting point 164–166° C.

Provenance & Evidence