作者:R.C. Cookson、J. Hudec、S.A. Knight、B.R.D. Whitear
DOI:10.1016/0040-4020(63)85014-0
日期:1963.1
Citral (I) is cyclized by UV irradiation1 to 2-isopropenyl-5-methylcyclopentane-carboxaldehyde (II), containing the carbon skeleton of the monoterpenes of ants and catmint. 1,6,6-Trimethylbicyclo[2,1,1]hexane-2α-carboxaldehyde (XII, R = H), produced in lesser amount at the same time, was synthesized from camphor. The two photocitrals may, perhaps, come from a common intermediate containing the cyclopentane
柠檬醛(I)通过UV辐射1环化成2-异丙烯基-5-甲基环戊烷-甲醛(II),该残基包含蚂蚁和猫薄荷的单萜的碳骨架。由樟脑合成了少量同时生成的1,6,6-三甲基双环[2,1,1]己烷-2α-甲醛(XII,R = H)。两种光柠檬酸可能来自一个含有环戊烷环的共同中间体。