Triethyl methanetricarboxylate → HCID 54710203, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3,4-dihydro-2H-1,4-benzoxazine (6 g) and tri(ethoxycarbonyl)methane (9.4 ml) was stirred at 150° C. for 1 hour and at 200° C. for 1 hour. The mixture was cooled and the solid was washed with ether to give pale brown crystals of 2,3-dihydro-6-ethoxycarbonyl-7-hydroxy-5-oxo-5H-pyrido[1,2,3-de]-1,4-benzoxazine (9.6

Provenance & Evidence