Magnesium → HCID 18172349, compound

Participants

Reaction Steps

A solution of ethyl diethylphosphino phenoxy acetate in dry THF was added slowly to a stirred ice cooled suspension of sodium hydride in dry THF under nitrgen atmosphere. The mixture was stirred at 0° C. for 30 min. and added a solution of 4-[2-(Phenoxazin-10-yl)ethoxy]benzaldehyde in dry THF dropwise at ice temperate. The mixture was allowed to warm to room temperature and stirred for overnight. The solvent was evaporated under reduced pressure, residue was diluted with water and extracted with ethylacetated. The organic layer was washed with water, brine, dried and concntrated. The residue was chromatographed with 10% ehylacetate in pet. ether as an eluent to afford ethyl 3-[4-[2-(Phenoxazin-10-yl)ethoxy]phenyl]-2-phenoxypropenoate (59%) as thick liquid. Ethyl 3-[4-[2-(Phenoxazin-10-yl)ethoxy]phenyl]-2-phenoxypropenoate (3.5 gm) and magnesium turnings in dry methanol was stirred at room temp for 12 h. Methanol was evaporated and the residue was taken into water, acidified with 2 N HCI and extracted with ethylacetate. The organic layer was washed with water, brine, evaporated and chromatographed with 10% ethylacetate in per. ether to yield the title compound (2.9 g, 85%). mp: 106-110° C.

Provenance & Evidence