Thermolysis of dimethyl 1,2-heptalenedicarboxylates leads by two different pathways to the corresponding 1,3-dicarboxylates and to azulenes – . The rearrangement of into presumably proceeds via a heptvalene intermediate .
1,2-庚二
烯二
甲酸二甲
酯的热解通过两种不同的途径导致相应的1,3-二
羧酸酯和天青石– 。的重新排列成大概经由中间一个heptvalene前进。