Catalytic Asymmetric Decarboxylative Mannich Reaction of Malonic Acid Half Esters with Cyclic Aldimines: Access to Chiral β-Amino Esters and Chroman-4-amines
作者:Chun-Man Jia、Heng-Xia Zhang、Jing Nie、Jun-An Ma
DOI:10.1021/acs.joc.6b01750
日期:2016.9.16
An enantioselective decarboxylative Mannich reaction of malonicacid half esters (MAHEs) with cyclic aldimines has been accomplished by employing the copper(I)/(R,R)-Ph-Box complex as chiral catalyst. The desired β-amino esters were obtained in good to high yields with excellent enantioselectivities. Furthermore, one of the corresponding Mannich products could be readily transformed into chiral chroman-4-amines
Highly Enantioselective Decarboxylative Mannich Reaction of Malonic Acid Half Oxyesters with Cyclic Trifluoromethyl Ketimines: Synthesis of β-Amino Esters and Anti-HIV Drug DPC 083
作者:Hai-Na Yuan、Shen Li、Jing Nie、Yan Zheng、Jun-An Ma
DOI:10.1002/chem.201303307
日期:2013.11.18
An organocatalyticenantioselectivedecarboxylative Mannich reaction of malonicacidhalf oxyesters with cyclic ketimines was developed for the preparation of enantioenriched β‐amino esters with a quaternary stereogenic center and the anti‐HIV drug DPC 083 (see scheme).
Enantioselective Construction of Amino Carboxylic‐Phosphonic Acid Derivatives Enabled by Chiral Amino Thiourea‐Catalyzed Decarboxylative Mannich Reaction
作者:Xue‐Qi Wang、Fang‐Fang Feng、Jing Nie、Fa‐Guang Zhang、Jun‐An Ma
DOI:10.1002/adsc.202200306
日期:2022.6.7
An asymmetric decarboxylativeMannichreaction of phosphonate sultam-ketimines with malonic acid half esters is developed enabled by saccharide-derived bifunctional amino thiourea catalysis. This protocol provides access to a broad range of α-amino-β-carboxylic phosphonates featuring the N,P-containing tetrasubstituted stereocenters with 78–99% ee. Further synthetic derivatizations could allow the
通过糖衍生的双功能氨基硫脲催化,开发了膦酸磺胺酮亚胺与丙二酸半酯的不对称脱羧曼尼希反应。该协议提供了广泛的 α-氨基-β-羧酸膦酸盐,具有 78–99% ee 的含N、P的四取代立体中心。进一步的合成衍生化可以允许将酰胺、醇和氮杂环丁烷支架引入核心结构。