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
已经研究了铜1,2-氨基磺酸环与各种格氏试剂的铜催化开环反应。使用氯化锂作为添加剂对于激活CO键裂解至关重要。该反应具有高度的区域选择性和立体选择性,因此可以高效合成对映体富集的α-支化苄胺衍生物。此外,我们证明了该产品有潜力用作制备各种含氮杂环的基础。