聚苯乙烯负载羟基对甲苯磺酰氧基碘苯参与酮的α-对甲苯磺酰氧基化反应

α-Tosyloxylation of Ketones with Poly[4-hydroxy(tosyloxy)iodo]styrene

用线型聚苯乙烯负载二醋酸碘苯与对甲苯磺酸反应制得了聚苯乙烯负载羟基对甲苯磺酰氧基碘苯 ;该负载型高碘试剂作用与酮合成了α -对甲苯磺酰氧基酮 ,在此反应中显示出较好的反应活性 ,并且可循环使用 。

Reaction of the liner poly[styrene(iodoso diacetate)] with p-toluenesulfonic acid affords the poly[4-hydroxy(tosyloxy)iodo]styrene. This hypervalent iodine agent exhibites enough reactivity for the α-tosyloxylation of ketones; moreover, it can be regenerated and reused as environmentally benign reagent.