Synthesis of Functionalized Allenamides from Ynamides by Enolate Claisen Rearrangement
作者:Julien Brioche、Christophe Meyer、Janine Cossy
DOI:10.1021/ol400402n
日期:2013.4.5
The Claisenrearrangement of N-Boc glycinates derived from ynamido-alcohols affords an efficient and stereoselective access to highly functionalized allenamides. These compounds undergo silver-catalyzed cyclization to 3-pyrrolines which are useful precursors for the synthesis of substituted pyrrolidines.
Saucy–Marbet rearrangements of alkynyl halides in the synthesis of highly enantiomerically enriched allenyl halides
作者:Yu Tang、Lichun Shen、Becky J. Dellaria、Richard P. Hsung
DOI:10.1016/j.tetlet.2008.08.089
日期:2008.11
A stereospecific Saucy-Marbet rearrangement of alkynyl halides is described here. These rearrangements provide an entry to highlyenantiomericallyenriched allenyl bromides and chlorides through excellent chirality transfer and the reservation of optical integrity of alkynyl halides.