异氰酸苯酯 、
(5RS,6SR)-2-[4-(dimethylamino)phenyl]-6-phenyl-5,6-dihydro-4H-1,3-oxazin-5-ol 在
氩 、 silica 、
乙醚 作用下,
以
1,2-二氯乙烷 为溶剂,
20.0~40.0 ℃
、359.97 kPa
条件下,
反应 2.0h,
以(5RS, 6SR)-2-[4-(dimethylamino)phenyl]-6-phenyl-5-phenylcarbamoyloxy-5,6-dihydro-4H-1,3-oxazine (0.55 g), m.p. 183° C., is obtained的产率得到(5RS,6SR)-2-[4-(dimethylamino)phenyl]-6-phenyl-5-phenylcarbamoyloxy-5,6-dihydro-4H-1,3-oxazine