4-Benzoyl-2-(4-bromophenyl)-1-(4-methoxyphenyl)-1,2-dihydropyrimidino[4,3-c ][1,4]benzoxazine-3,5-dione

: The reaction of 3-benzoylpyrrolo[2,1-c ][1,4]benzoxazin-1,2,4-trione with N -(4-bromophenyl)-1- (4-methoxyphenyl)methanimine under thermolytical conditions afforded 4-benzoyl-2-(4-bromophenyl)- 1-(4-methoxyphenyl)-1,2-dihydropyrimidino[4,3-c ][1,4]benzoxazine-3,5-dione in a good yield. The reaction proceeded via in situ generation of a reactive intermediate, acyl(imidoyl)ketene. The compound was fully characterized.

It should also be mentioned that compound 1 shows fluorescent properties in solid state (Figure 2) and in a solution.

Results and Discussion
The title compound 1 was synthesized in several steps (Scheme 2).Initially, methyl benzoylpyruvate 4 was obtained by the Claisen condensation of acetophenone and diethyl oxalate [7].Next, the reaction of compound
It should also be mentioned that compound 1 shows fluorescent properties in solid state (Figure 2) and in a solution.Structure of compound 1 was unambiguously confirmed by the single crystal X-ray analysis (CCDC 2047333, CCDC Refcode = FADPUZ) [6].
It should also be mentioned that compound 1 shows fluorescent properties in solid state (Figure 2) and in a solution.
It should also be mentioned that compound 1 shows fluorescent properties in solid state (Figure 2) and in a solution.

Scheme 1 .
Scheme 1. Synthesis of fused heterocycles A and B via reactions of acyl(imidoyl)ketenes C.