Access to α-Arylglycines by Umpolung Carboxylation of Aromatic Imines with Carbon Dioxide
作者:Chun-Xiao Guo、Wen-Zhen Zhang、Hui Zhou、Ning Zhang、Xiao-Bing Lu
DOI:10.1002/chem.201604623
日期:2016.11.21
straightforward and transition‐metal‐free approach for the efficient synthesis of α‐arylglycine derivatives from aromatic imines and carbondioxide was enabled by an umpolung carboxylation reaction. Various substituted diphenylmethimines underwent the carboxylation smoothly with carbondioxide in the presence of potassium tert‐butoxide and 18‐crown‐6 to give the corresponding carboxylated products in good to high