rac-(1R,4S,4aS,8S,9aR)-8-methyl-1,5,6,7,8,9a-hexahydro-1,4-epoxy-4a,8-methanobenzo[7]annulen-9(4H)-one 、
2,4-二硝基苯肼 在
盐酸 作用下,
以
甲醇 为溶剂,
反应 0.02h,
以96%的产率得到rac-1-(2,4-dinitrophenyl)-2-((1R,4S,4aR,8R,9aR)-8-methyl-1,5,6,7,8,9a-hexahydro-1,4-epoxy-4a,8-methanobenzo[7]annulen-9(4H)-ylidene)hydrazine