(5RS,6SR)-2-(2-fluorophenyl)-6-phenyl-5,6-dihydro-4H-1,3-oxazin-5-ol 、
N-cinnamylthiophene-2-carboxamide 在
solution 、
间氯过氧苯甲酸 、
二氯甲烷 、
trifluoroborane diethyl ether 作用下,
以(5RS, 6SR)-6-phenyl-2-(2-thienyl)-5,6-dihydro-4H-1,3-oxazin-5-ol (2.9 g), m.p. 158° C., is obtained的产率得到(5RS,6SR)-6-phenyl-2-(2-thienyl)-5,6-dihydro-4H-1,3-oxazin-5-ol