The oxidation of diphenyl diselenide with 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) represents a convenient mild method to produce a strongly electrophilic phenylselenium reagent. Clean phenylseleno methoxylations and hydroxylations of alkenes containing different types of functional groups can be effected by working in methanol or in acetonitrile and water, respectively. This new electrophilic reagent can also be employed to promote efficient cyclization reactions of alkenols to tetrahydrofurans or of alkenoic acids to lactones.
二苯二
硒化物与2,3-二
氯-5,6-二
氰苯醌(
DDQ)的氧化反应是一种方便温和的方法,可以生成强亲电子性的苯基
硒试剂。在
甲醇或
乙腈和
水的条件下,可以对含有不同类型官能团的烯烃进行干净的苯基
硒醚化和羟基化。这种新的亲电子试剂还可以用于促进烯醇向
四氢呋喃或烯酸向内酯的高效环化反应。