Allylation of Nitrosobenzene with Pinacol Allylboronates. A Regioselective Complement to Peroxide Oxidation
作者:Robert E. Kyne、Michael C. Ryan、Laura T. Kliman、James P. Morken
DOI:10.1021/ol101472k
日期:2010.9.3
Addition of nitrosobenzene to pinacol allylboronates leads to oxidation of the organoboron with concomitant rearrangement of the substrate alkene. This reaction appears to proceed by allylboration of the nitroso group in analogy to carbonyl and imine allylation reactions. Remarkably, the N−O bond is cleaved during the reaction such that simple alcohols are the final reaction product.
Acid-catalyzed regioselective sulfamination of γ-amino–alkenes and stereoselective rearrangement of pyrrolidines to piperidines
作者:Lijun Li、Haining Wang、Deshun Huang、Yian Shi
DOI:10.1016/j.tet.2012.08.043
日期:2012.11
This paper describes efficient acid-catalyzed regioselective sulfamination of gamma-amino-alkenes to form pyrrolidines and stereoselective rearrangement of pyrrolidines to piperidines. A possible reaction mechanism has been proposed. (c) 2012 Elsevier Ltd. All rights reserved.