3-Phenylcarbamoyl-2,5-norbornadiene-2-carboxylic acid (1b) undergoes a facile and quantitative isomerization into the corresponding quadricyclane derivative (2b) under sunlight. The back isomerization of 2b to 1b proceeds quantitatively by the use of catalytic amounts of Rh2(CO)4Cl2.
3-苯基
氨基甲酰基-
2,5-降冰片二烯-2-
羧酸 (1b) 在阳光下容易和定量异构化为相应的
四环烷衍
生物 (2b)。通过使用催化量的 Rh2(CO)4Cl2,2b 到 1b 的反异构化进行定量。