Palladium‐Catalyzed Direct Carbonylation of Bromoacetonitrile to Synthesize 2‐Cyano‐
<i>N</i>
‐acetamide and 2‐Cyanoacetate Compounds
作者:Zhi‐Peng Bao、Xiao‐Feng Wu
DOI:10.1002/anie.202301671
日期:——
A new and convenientpalladium-catalyzed carbonylative procedure of bromoacetonitrile has been developed. A variety of valuable 2-cyano-N-acetamide and 2-cyanoacetate compounds were obtained in good to excellent yields under mild reaction conditions. Furthermore, this transformation can be carried out under atmospheric pressure and provides an alternative route to 7 drug compounds.
Base-Catalyzed and Solvent-Dependent Cascade Reaction in the Regioselective Synthesis of Novel Fused Polycycles
作者:Min Xia、Guo-Feng Xiang、Bin Wu、Yi-Feng Han
DOI:10.1002/adsc.200700581
日期:2008.4.7
A novel base-catalyzed cascade reaction induced by Knoevenegal condensation that can regioselectively generate cyanoflavanones and heavily fused polycycles with intensive fluorescence and high quantum yields is reported. The reaction is solvent-dependent, low-polarity solvents promote the formation of polycycles while high-polarity solvents favor the conversion to cyanoflavanones. A possible mechanism