Reaction of an excess of methyl-lithium with the tosylhydrazone of tricyclo[5,3,0,02,10]deca-3,5-dien-9-one affords tetracyclo[4,4,0,02,10,05,9]deca-3,7-diene, whereas reaction with 2 equiv. of methyl-lithium gives tricyclo[5,3,0,04,10]deca-2,5,8-triene.
过量的
甲基锂与
三环[5,3,0,0 2,10 ] deca-3,5-dien-9-one的
甲苯磺酰基反应,得到四环[4,4,0,0 2,10, 0 5,9 ]癸-3,7-二
烯,而用2当量反应。
甲基锂得到
三环[5,3,0,0 4,10 ] dec-2,5,8-
三烯。