Synthesis of <sup>15</sup>N-labeled heterocycles <i>via</i> the cleavage of C–N bonds of anilines and glycine-<sup>15</sup>N
作者:Jiwen He、Xingguo Zhang、Qiuqin He、Hao Guo、Renhua Fan
DOI:10.1039/d1cc01734a
日期:——
A nitrogen replacement process of anilines by glycine-15N via the cleavage of two C–N bonds for the synthesis of 15N-labeled aromatic heterocycles was reported.
Cu(i)-catalyzed chemical fixation of CO2 with 2-alkynylaniline into 4-hydroxyquinolin-2(1H)-one
作者:Chun-Xiao Guo、Wen-Zhen Zhang、Si Liu、Xiao-Bing Lu
DOI:10.1039/c3cy00858d
日期:——
copper(I) catalyzed reaction of 2-alkynylaniline with CO2 using DBU as base to produce 4-hydroxyquinolin-2(1H)-one derivatives in moderate to good yield is presented. In this reaction, a unique bond cleavage pattern for CO2 was observed that one of the C–O double bonds of CO2 was totally broken and rearranged into two moieties in the absence of the reductive reagent. This efficient reaction system showed