Rhodium-Catalyzed Enantioselective Conjugate Addition of Sodium Tetraarylborates to 2,3-Dihydro-4-pyridones and 4-Quinolones by Using (R,R)-1,2-Bis(tert-butylsulfinyl)benzene as a Ligand
作者:Xiangyang Zhang、Jun Chen、Fuzhong Han、Linfeng Cun、Jian Liao
DOI:10.1002/ejoc.201001613
日期:2011.3
(R,R)-1,2-Bis(tert-butylsulfinyl)benzene as an efficient and simple ligand can be applied in the rhodium-catalyzed asymmetric 1,4-addition of sodium tetraarylborate reagents to N-substituted 2,3-dihydro-4-pyridones and 4-quinolones. The reactions proceeded smoothly to provide the corresponding adducts in good yields (up to 92%) and excellent enantioselectivities (up to 99% ee) under mild conditions
(R,R)-1,2-双(叔丁基亚磺酰基)苯作为一种高效且简单的配体可用于铑催化的四芳基硼酸钠试剂与N-取代的2,3-二氢的不对称1,4-加成反应-4-吡啶酮和4-喹诺酮。在温和的条件下,反应顺利进行,以良好的产率(高达 92%)和优异的对映选择性(高达 99% ee)提供相应的加合物。