Grandisol [cis-2-(2-isopropenyl-1-methylcyclobutyl)ethanol, (1a)] is the major component of the pheromonal complex of the cotton boll weevil Anthonomus grandis Boheman, which is a very important pest in the cotton fields of the Americas.1 The compound is also released by females of the ambrosia beetle Trypodendron signatum2 and by males of the bark beetles Pityophthorus pityographus,3Pityogenes quadridens and P. calcaratus.4 Grandisol, along with its ...