Results of obtaining 6H-1,2-oxazin-6-ones.

6H-1,2-Oxazin-6-ones	R1	R2	Yield (%)
1	4-Cl	4-Me	55
2	–H	4-Me	60
3	4-Cl	4-Cl	55
4	4-Me	4-Cl	58
5	–H	4-Cl	55
6	4-Me	4-Me	88
7	4-OMe	4-Me	60
8	4-Me	4-OMe	74
9	4-OMe	4-Cl	65
10	4-Cl	4-OMe	61
11	4-Me	3-OMe	70
12	3-OMe	4-Me	57