Photoirradiation of Me2CO–H2O solution of pent-4-en-1-ol (1a) with a high-pressure mercury lamp in a test tube gave 8-hydroxyoctan-2-one (3a) in 66 % yield along with oxetane (4a) and the isomer (4a′) in 10 % yield. Irradiation of the running Me2CO–H2O solution of 1a in the flow system of a microchannel reactor (MCR) gave mainly 4a. The photoreaction of 1,1-diphenylethene (2a) with triethylamine gave
在试管中用高压
水银灯对pent-4-en-1-ol(1a)的Me 2 CO–H 2 O溶液进行光辐照,得到的8-羟基
辛烷-2-酮(3a)的收率为66%用氧杂
环丁烷(4a)和异构体(4a')的收率为10%。在微通道反应器(MCR)的流动系统中辐照1a的运行中Me 2 CO–H 2 O溶液主要得到4a。
1,1-二苯乙烯(2a)与
三乙胺的光反应产生了马氏复合物(5a)和反马氏复合物(6a))。MCR的使用提高了5a的产量。这些现象由MCR的光程长度效应解释。