上游原料
5-chloro-2H-3,1-benzoxazine-2,4(1H)-dione5-chloro-1-methyl-2H-3,1-benzoxazine-2,4(1H)-dioneethyl 3-(ethylanilino)-3-oxopropanoateethyl 3-chloro-3-oxopropanoate; 2-Ethoxycarbonylacetyl chloride; Ethyl malonyl chloride5-chloro-2H-3,1-benzoxazine-2,4(1H)-dione5-chloro-1-methyl-2H-3,1-benzoxazine-2,4(1H)-dioneethyl 3-(ethylanilino)-3-oxopropanoate2-amino-6-chlorobenzoic acidethyl 5-chloro-4-hydroxy-1-methyl-2-oxo-1,2-dihydro-3-quinolinecarboxylateN-ethyl-N-phenylamine; N-ethylaniline5-chloro-4-hydroxy-1-methyl-2-oxo-1,2-dihydro-3-quinolinecarboxylic acid
