乙基叠氮基甲酸酯 、
(1α,4α,4aα,5β,8β,8aα)-1,4,4a,5,8,8a-Hexahydro-1,4,10,10-tetramethyl-1,4;5,8-dimethanophthalazin 以78%的产率得到5,8,11,11-Tetramethyl-(3at,4at,8at,9at)-3a,4,4a,5,8,8a,9,9a-octahydro-4r,9c;5t,8t-dimethano<1,2,3>triazolo<4,5-g>phthalazin-1-carbonsaeureethylester