作者:Ping-Shu Chen、Chin-Hsing Chou
DOI:10.1016/s0040-4020(97)10134-x
日期:1997.12
Pyrolysis of (1-isobenzofuryl)methyl benzoate (9a), produced in situ from flash vacuum pyrolysis of (7-oxa-1-benzonorbornenyl)methyl benzoate (10a), gave methylenebenzocyclobutenone (4), 2-ethynylbenzaldehyde (5) and benzocyclopentadienone (6). The deuterium-labeled study indicated that the mechanism for the formation of these products involved the double migrations of benzoate group in 9a. Pyrolysis of (
(1-异苯并呋喃基)苯甲酸甲酯(9a)的热解是由(7-氧杂-1-苯并降冰片烯基)苯甲酸甲酯(10a)的快速真空热解原位产生的,得到亚甲基苯并环丁烯酮(4),2-乙炔基苯甲醛(5)和苯并环戊二烯酮(6)。氘标记的研究表明,这些产物的形成机制涉及9a中苯甲酸酯基团的两次迁移。(3-甲基-1-异苯并呋喃基)苯甲酸甲酯热解(9c)得到1,3-二亚甲基-1,3-二氢异苯并呋喃(33),在苯中稳定并在氯仿中迅速水解,得到1,2-二乙酰苯(35)。