Dioxirane oxidation of (Z)-1-thioaurones, (E)-3-arylidene-1-thiochroman-4-ones and (E)-3-arylidene-1-thioflavan-4-ones
作者:Waldemar Adam、Dieter Golsch、Lazaros Hadjiarapoglou、Albert Lévai、Csaba Nemes、Tamás Patonay
DOI:10.1016/s0040-4020(01)89320-0
日期:1994.1
The oxidation of the title compounds 1, 4 and 7 with dimethyldioxirane (DMD) afforded the corresponding sulfoxides 2, 5 and 8 and/or sulfones 3, 6 and 9 in good yields (Scheme 1 and 2). Excess dimethyldioxirane gave the sulfones chemoselectively without formation of the epoxides. The epoxidation of the sulfones 6a,b,d to the respective spiroepoxides 10a,b,d required the more reactive methyl(trifluoromethyl)dioxirane
标题的氧化化合物1,4和7,得到相应的亚砜与二甲基二(DMD)2,5和8和/或砜3,6和9以良好的收率(方案1和2)。过量的二甲基二环氧乙烷在没有形成环氧化物的情况下化学选择性地产生了砜。砜6a,b,d被环氧化成各自的螺环氧化物10a,b,d需要更高反应性的甲基(三氟甲基)二环氧乙烷(TFD)作为氧化剂。