Aluminium lithium hydride → HCID 15169762, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 56 g of lithium aluminum hydride in 500 ml of THF was added the (-)-3-(4-morpholinylmethyl)- 4-nitroso-3,4-dihydro-2H-1,4-benzoxazine described above while cooling the reaction mixture to 0° C. with an external cooling bath. When addition was complete the cooling bath was removed, the reaction mixture was stirred for one hour at ambient temperature, cooled again to 0° C. and the excess hydride carefully quenched by the dropwise addition of 5 ml of water, followed by 8 ml of 10% aqueous sodium hydroxide, followed by an additional 5 ml of water. The mixture was stirred, filtered through filter aid, and the filtrate taken to dryness to afford 14.3 g of (-)-3-(4-morpholinylmethyl)-4-amino-3,4-dihydro-2H-1,4-benzoxazine, which was used as such in the next synthetic step without further characterization or purification.

Provenance & Evidence