作者:O. Tsuge、K. Oe、M. Tashiro
DOI:10.1016/s0040-4020(01)99373-1
日期:——
photochemical reaction of 2,5-disubstituted 1,3,4-oxadiazoles with furan has been studied. With or without benzophenone as a sensitizer, irradiation of 2,5-diphenyl-1,3,4-oxadiazole with furan in benzene solution gives the 1 : 1 cycloadduct, tetrahydrofuro[2·3-b]azetidino[2·1-b]-1,3,4-oxadiazole. However in the presence of iodine 3-acylfurans and their acylhydrazones are formed. A reaction pathway of
研究了2,5-二取代的1,3,4-恶二唑与呋喃的光化学反应。在有或没有二苯甲酮作为敏化剂的情况下,用呋喃在苯溶液中辐照2,5-二苯基-1,3,4-恶二唑会生成1:1的环加合物,四氢呋喃[2·3-b]氮杂环丁烷[2·1-b] ] -1,3,4-恶二唑。然而,在碘的存在下,形成了3-酰基呋喃及其酰基hydr。已经提出了这种新颖的光诱导的酰化的反应途径。