Patent ID: 7161001

Claim:
A method for making a benzoxazine compound of the formula (3): comprising the steps of: (a) reacting an o-nitrophenol having the formula, and a compound having the formula, in the presence of a sufficient amount of an aromatic hydrocarbon solvent, and an effective amount of a phase-transfer-catalyst, an alkali metal halide, and an acid acceptor, to form a compound of the formula (2): and (b) hydrogenating the resulting compound of formula (2), wherein R 1 is a C( 1-8 ) monovalent radical selected from the group consisting of alkyl and alkoxyalkyl, and R 2 –R 5 can be the same or different, and are selected from the group consisting of hydrogen, and C( 1-8 ) monovalent alkyl and alkoxyalkyl radicals, and X is halogen.