Efficient Swern oxidation and Corey–Kim oxidation with ion-supported methyl sulfoxides and methyl sulfides
作者:Daisuke Tsuchiya、Masayuki Tabata、Katsuhiko Moriyama、Hideo Togo
DOI:10.1016/j.tet.2012.06.026
日期:2012.8
Swern oxidation of various benzylic and allylic alcohols, primary alcohols, and secondary alcohols with two ion-supported methyl sulfoxides A-1 (C6) and B-1 (C10), and oxalyl chloride in the presence of triethylamine in dichloromethane, followed by simple diethyl ether extraction of the reaction mixture, gave the corresponding aldehydes and ketones, respectively, in good yields with high purity. Similarly
在二氯甲烷中,在三乙胺存在下,用两种离子负载的甲基亚砜A-1(C 6)和B-1(C 10)和草酰氯对各种苄基和烯丙基醇,伯醇和仲醇进行Swern氧化,然后简单的乙醚萃取反应混合物,分别以高收率和高纯度分别得到相应的醛和酮。同样,用两种离子支持的甲基硫醚A-2(C 6)和B-2(C 10)对各种苄醇和烯丙基醇,伯醇和仲醇进行Corey-Kim氧化)和N-氯代琥珀酰亚胺在二氯甲烷中的三乙胺存在下,然后简单地用乙醚萃取反应混合物,分别以高收率和高纯度提供相应的醛和酮。两种反应都没有产生任何难闻的气味。在Swern氧化中,以高收率回收了离子负载的甲基硫化物,可以将其重新氧化以生成离子负载的甲基亚砜A-1(C 6)和B-1(C 10),以便在同一氧化中重复使用。在Corey–Kim氧化过程中,离子支撑的甲基硫化物A-2(C 6)和B-2(C 10)以高收率回收,也可用于相同的氧化。