A conciseenantioselective route to isotetronic acids using an organocatalyzed aldol reaction between alpha-oxocarboxylic acids and aldehydes has been developed, leading to the titled compounds in reasonable yields and good enantioselectivities.
The Synthesis of Chiral Isotetronic Acids with Amphiphilic Imidazole/Pyrrolidine Catalysts Assembled in Oil-in-Water Emulsion Droplets
作者:Boyu Zhang、Zongxuan Jiang、Xin Zhou、Shengmei Lu、Jun Li、Yan Liu、Can Li
DOI:10.1002/anie.201206438
日期:2012.12.21
catalytic cascade reaction of α‐ketoacids and aldehydes is achieved using the title catalyst and water as the solvent. Fluorescence imaging shows that the catalyst is mainly distributed on the surface of emulsiondroplets. Optically active isotetronicacids can be obtained with this method and the emulsiondroplets are responsible for the high reactivity and enantioselectivity.