苯并噻吩砜 、
1-(4-(dimethylamino)benzylidene)-5-methyl-4,5-dihydro-3H-1λ5-pyrazol-3-one 以
甲苯 为溶剂,
反应 0.75h,
以71%的产率得到rac-(3R,5S,5aS,10bS)-5-(4-(dimethylamino)phenyl)-3-methyl-2,3,5a,10b-tetrahydro-1H,5H-[1]benzothieno[3,2-c]pyrazolo[1,2-a]pyrazol-1-one 6,6-dioxide