2,3-dihydro-2,2-dimethyl-5-phenyl-8-trifluoromethyl-1H-pyrimido[1,2-a]quinoxaline 6-oxide 、
盐酸 在
ice 、
乙酸乙酯 、 C20H19ClF3N3O 作用下,
以
乙醇 为溶剂,
以to yield 57.87 g of 2,3-dihydro-2,2-dimethyl-5-phenyl-8-trifluoromethyl-1H-pyrimido[ 1,2-a]quinoxaline 6-oxide hydrochloride as a bright yellow crystalline solid, m.p. 234° C., (Found: C, 58.43, H, 4.68, N, 10.15%; C20H19ClF3N3O requires C, 58.61, H, 4.67, N, 10.25%)的产率得到2,3-Dihydro-2,2-dimethyl-5-phenyl-8-trifluoromethyl-1H-pyrimido[1,2-a]quinoxaline 6-oxide hydrochloride