A Highly Diastereo- and Enantioselective Copper(I)-Catalyzed Henry Reaction Using a Bis(sulfonamide)−Diamine Ligand
作者:Wei Jin、Xincheng Li、Boshun Wan
DOI:10.1021/jo101932a
日期:2011.1.21
bis(sulfonamide)−diamine (BSDA) ligands were synthesized from commercially available chiral α-amino alcohols and diamines. The chiral BSDA ligand 3a, coordinated with Cu(I), catalyzes the enantioselective Henry reaction with excellent enantioselectivity (up to 99%). Moreover, with the assistance of pyridine, a CuBr−3a system promotes the diastereoselective Henry reaction with various aldehyde substrates
从市售的手性α-氨基醇和二胺合成了一系列的双(磺酰胺)-二胺(BSDA)配体。与Cu(I)配位的手性BSDA配体3a以优异的对映选择性(高达99%)催化对映选择性亨利反应。此外,借助吡啶,CuBr- 3a系统可促进与各种醛底物的非对映选择性亨利反应,并以高达99%的收率和32.3:1的顺/反选择性提供相应的顺选择性加合物。顺式加合物的对映体过量为97%。