Photooxygenation of an enol ether: synthesis of exo- and endo-3,4-dioxa-2,5-dimethoxy-7,8-benzo[4.2.2.02,5]deca-7,9-diene and its chemical transformations
作者:Ramazan Altundaş、Metin Balci
DOI:10.1016/s0040-4020(01)80167-8
日期:1993.1
The reaction of singlet oxygen with 2 afforded two isomeric dioxetanes 3 and 4 which were decomposed upon heating to the expected dihydronaphthalene derivative 5. Photooxygenation of 2 in the presence of thiourea resulted in the formation of diketone 8 and ketal 7 ; the later presumably derived from incorporation of the solvent molecule.
单线态氧与2的反应提供了两个异构体二氧杂环丁烷3和4,它们在加热后分解为预期的二氢萘衍生物5。在硫脲存在下2的光氧合导致二酮8和缩酮7的形成。后者大概源自溶剂分子的掺入。