The initially formed N-phenylnitrone-intermediates are converted by a tandem-reaction (cycloaddition, Cope rearrangement, retro-Michael addition, and indolization) to 2-vinylindoles . Thus these indoles can be synthesized simply and stereoselectively in a one-pot reaction from N-phenylhydroxylamine , aldehydes , and electron-deficient allenes .
                                    最初形成的N-苯基硝酮中间体通过串联反应(环加成,Cope重排,逆迈克尔加成和
吲哚化)转化为2-
乙烯基吲哚。因此,这些
吲哚可通过一锅反应由N-苯基
羟胺,醛和缺电子的
丙二烯简单和立体选择性地合成。