Copper-Catalyzed Regio- and Stereoselective Ring-Opening of Cyclic Sulfamidates with Grignard Reagents assisted by Lithium Chloride
作者:Pitchaiah Arigala、Venkata S. Sadu、In-Taek Hwang、Jin-Soo Hwang、Chul-Ung Kim、Kee-In Lee
DOI:10.1002/adsc.201400850
日期:2015.6.15
Copper‐catalyzed ring‐opening reactions of cyclic 1,2‐sulfamidates with a wide range of Grignard reagents have been investigated. The use of lithium chloride as an additive is essential to activate CO bond cleavage. The reaction represents highly regio‐ and stereoselective, and thus allows for efficient synthesis of enantioenriched α‐branched benzylamine derivatives. Furthermore, we demonstrated that