Hetero-cope rearrangements - vI1 short and stereoselective syntheses of 2-vinylindoles by a tandem-process
作者:Jochen Wilkens、Andrea Kühling、Siegfried Blechert
DOI:10.1016/s0040-4020(01)90291-1
日期:1987.1
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。