BuMgNiPr2: A New Base for Stoichiometric, Position-Selective Deprotonation of Cyclopropane Carboxamides and Other Weak CH Acids This work was supported in part by Eastman Chemical. We are grateful to Z. Hantosi and C.-H. Lee for trial experiments, to I. Steele for the X-ray analyses, and to Professor S. Shuto of Hokkaido University for samples of Milnacipran precursors.
Rhodium(II)-Catalyzed Equilibration of Push-Pull Carbonyl and Ammonium Ylides. A Computationally Based Understanding of the Reaction Pathway
作者:Albert Padwa、James P. Snyder、Erin A. Curtis、Scott M. Sheehan、Kimberly J. Worsencroft、C. Oliver Kappe
DOI:10.1021/ja001088j
日期:2000.8.1
been found to undergo a rhodium(II)-catalyzed transformation, producing five-membered ammonium or carbonyl ylides depending on the reaction conditions used. In the absence of an external dipolarophile, ammonium ylides are the exclusive products formed. In most cases these ylides cannot be isolated as they readily undergo sigmatropic rearrangement or fragmentation reactions. In the presence of typical