作者:Scott E. Denmark、Justin I. Montgomery
DOI:10.1021/jo060975n
日期:2006.8.1
A general synthesis of a new type of heterodiene, the N-vinyl nitrone, is described. The synthetic sequence begins with the conjugate addition of benzeneselenol to nitroalkenes (in turn derived from Henry reaction of an aldehyde and a nitroalkane) to provide 2-selenenylnitroalkenes. These selenonitroalkanes are reduced to the corresponding hydroxylamines which are combined with aldehydes to form nitrones
描述了一种新型的杂二烯,N-乙烯基硝酮的一般合成。合成序列开始于将苯硒烯醇共轭加成到硝基烯烃中(依次衍生自醛和硝基烷的亨利反应)以提供2-硒烯基硝基烯烃。这些硒代硝基烷还原为相应的羟胺,与醛结合形成硝酮。然后将含有苯硒基-硝酮被氧化成其经历selenoxides顺-selenoxide消除以提供ñ -乙烯基硝酮。获得了取代的N-乙烯基硝酮的三个X射线晶体结构。另外,报道了N-乙烯基硝酮的第一次[4 + 2]环加成。