including the particularly simple divinylglycine, which is not easily accessible by using conventional methods. A straightforwardsynthesis of symmetrically α,α-disubstituted α-amino acids is presented. The key step of this process relies on the efficient double addition of Grignard reagents to acyl cyanohydrins to provide N-acyl amino alcohols selectively in good yields. The chemoselectivity of the reaction
Mechanochemistry‐Amended Barbier Reaction as an Expedient Alternative to Grignard Synthesis**
作者:Jagadeesh Varma Nallaparaju、Tatsiana Nikonovich、Tatsiana Jarg、Danylo Merzhyievskyi、Riina Aav、Dzmitry G. Kananovich
DOI:10.1002/anie.202305775
日期:2023.9.25
Use of mechanochemistry enabled the rapid in situ generation of Grignard reagents, thereby overcoming the longstanding limitations of the Magnesium-mediated Barbier reaction in solution.
Ligand‐Free Nickel‐Catalyzed Carbonyl Addition with Organoborons
作者:Sha‐Sha Wu、Xiaodong Ye、Zi‐Chao Wang、Shi‐Liang Shi
DOI:10.1002/cctc.202400633
日期:2024.9.23
In this report, we describe a practical, ligand-free, nickel-catalyzed carbonyl addition reaction using organoboron reagents that enables an efficient synthesis of both tertiary and secondary alcohols across a broad scope.