Photoreaction of 1-(1-Cycloalkenyl)-4-phenyl-1-butanone under Neutral and Acidic Conditions
作者:Masaru Tada、Tetsuro Maeda、Hiroshi Saiki
DOI:10.1246/bcsj.51.1516
日期:1978.5
products, 7-phenylperhydro-4-indenone and 4-phenylperhydro-1-naphthelenone, under the action of boron trifluoride etherate. The reaction processes under acidic conditions have both an ionic and a free radical nature. The results have lead to the proposition of the mechanism involving electron transfer, proton transfer, and hydrogen abstraction.
1-(1-环烯基)-4-苯基-1-丁酮的紫外线照射会根据反应条件(中性或酸性)产生不同的产物。在苯中 1-(1-环戊烯基)-4-苯基-1-丁酮产生 4-苯基螺[4,4]-壬烷-1-酮,由分子内的氢和 4-环戊基-4-苯基丁醛形成,由螺酮的 Norrish I 型裂变形成。1-(1-Cyclohexenyl)-4-phenyl-1-butanone 不存在这种行为。两种酮在三氟乙酸作用下均生成还原产物 1-环戊基-4-苯基-1-丁酮和 1-环己基-4-苯基-1-丁酮,以及环化产物 7-苯基全氢-4-茚酮和4-苯基全氢-1-萘酮,在三氟化硼醚合物的作用下。酸性条件下的反应过程具有离子和自由基两种性质。