Pyrazole given in the title was prepared by the reaction of 2-diazo-3,4-bis(diphenylmethylene)cyclobutanone with acetylenes. Photolysis of the pyrazole afforded 1,2-dihydro-3H-benzo[a]cyclobuta[c]cycloheptan-1-one.
标题中给出的
吡唑通过2-重氮-3,4-双(二苯基亚甲基)
环丁酮与
乙炔的反应制备。
吡唑的光解得到1,2-二氢-3H-苯并[a]环丁[c]
环庚烷-1-酮。