作者:Werner Skorianetz、G�nther Ohloff
DOI:10.1002/hlca.19730560704
日期:1973.11.7
On irradiation in the presence of dye sensitizers, vinylogous epoxy carbonyl compounds undergo a novel photofragmentation reaction, to give furyl ketones in good yields. The fragmentation process is probably preceded by trans-cis isomerization of the double bond; in one case the cis-isomer could be isolated. In a side reaction epoxyenone 10 gives the cyclopentanone derivatives 13 and 14 by a [1, 2]
在染料敏化剂的存在下进行辐照后,乙烯基环氧羰基化合物会发生新型的光裂解反应,从而以高收率得到呋喃酮。分片过程可能是由之前的反式-顺式双键的异构化; 在一种情况下,可以分离出顺式异构体。在副反应中,环氧烯酮10通过甲基的[1,2]转移得到环戊酮衍生物13和14。