Study of the pyrolytic chemistry of isobenzofurylmethyl benzoates
作者:Ping-Shu Chen、Chin-Hsing Chou
DOI:10.1016/s0040-4020(97)10134-x
日期:1997.12
Pyrolysis of (1-isobenzofuryl)methylbenzoate (9a), produced in situ from flash vacuum pyrolysis of (7-oxa-1-benzonorbornenyl)methylbenzoate (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 benzoategroup in 9a. Pyrolysis of (
Substituent effects in the aliphatic Claisen rearrangement of substituted (1-methyl-3-oxahexa-1,5-dienyl)amines: synthesis of substituted 2-aminopent-4-enals. Alternative [1,3]-sigmatropic shifts in related aromatic systems