Dehydrogenative Cross-Coupling Reaction between <i>N</i>-Aryl α-Amino Acid Esters and Phenols or Phenol Derivative for Synthesis of α-Aryl α-Amino Acid Esters
作者:Muhammad Salman、Zhi-Qiang Zhu、Zhi-Zhen Huang
DOI:10.1021/acs.orglett.6b00162
日期:2016.4.1
dehydrogenative cross-coupling (DCC) reaction between N-arylglycine esters and phenols or 1,3,5-trimethoxybenzene was developed by copper catalysis using di-tert-butyl peroxide (DTBP) as an oxidant. Under optimized conditions, a range of N-arylglycine esters 1 underwent the DCC reaction smoothly with various phenols 2 or 1,3,5-trimethoxybenzene 4 to give desired α-aryl α -amino acid esters 3 or 5, respectively, with
一种新的脱氢交叉耦合(DCC)之间反应Ñ -arylglycine酯和苯酚或1,3,5-三甲氧基苯,通过铜催化使用二开发-叔-丁基过氧化物(DTBP)作为氧化剂。在最佳条件下,一系列N-芳基甘氨酸酯1与各种酚2或1,3,5-三甲氧基苯4顺利进行DCC反应,分别得到具有高邻位度的所需α-芳基α-氨基酸酯3或5区域选择性中等至极高的产率。提出了可能的涉及芳族亲电取代的机理。