Cleavage of α, α-disubstituted β-bromoketone intermediates derived from (+)-camphor forms the basis of an alternative enantiospecific synthesis of (Z)-3-methyl-6-isopropenyl-3, 9- decadien-1-yl acetate (1), one of the sex pheromones of the female California red scale, Aonidiella aurantii (Maskell).