2-cyclohexyl-4ξ,4a,8a-trimethyl-(4a
r,8a
c)-4a,5,6,7,8,8a-hexahydro-4
H-benzo[
e][1,2]oxazinium; tetraphenylborate 在
potassium carbonate 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
生成
2-cyclohexyl-4,4a,8a-trimethyl-(4ar,8ac)-4a,5,6,7,8,8a-hexahydro-2H-benzo[e][1,2]oxazine