Formation of Cyclohexano[<i>c</i>]1,2,5-oxadiazole from 1,2-Cyclohexanedione Dioxime. An Attempted Beckmann Rearrangement with Thionyl Chloride in Liquid Sulfur Dioxide
作者:Niichiro Tokura、Ritsuro Tada、Kunio Yokoyama
DOI:10.1246/bcsj.34.270
日期:1961.2
An attempted Beckmann rearrangement of 1,2-cyclohexanedione dioxime with thionyl chloride in liquid sulfur dioxide resulted in the formation of cyclohexano [c] 1,2,5-oxadiazole in 70% yield. The structure of the oxadiazole was established by oxidation, reduction, and synthesis. The reason why the condensation was predominant over the rearrangement was discussed in comparison with the case of benzil
1,2-环己二酮二肟与亚硫酰氯在液态二氧化硫中的尝试贝克曼重排导致环己基[c] 1,2,5-恶二唑的形成,产率为70%。恶二唑的结构是通过氧化、还原和合成建立的。与苄基二肟的情况相比,讨论了缩合在重排中占主导地位的原因。