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.
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.
and thermodynamically efficient for deprotonation/magnesiation cis and β to an activating carboxamido group on a cyclobutane ring. The resulting carboxamido-stabilized amido-Grignards are useful reagents. The method provides an entirely new approach to controlled substitution on cyclobutanes. BuMgN(i-Pr) 2 will also metalate pivaloyl amides.