作者:Jie Li、Jiaqi Yao、Weiping He、Fan Yang、Xiaoming Liu
DOI:10.2174/1570178616666190212125426
日期:2019.10.9
A series of new N-heterocyclic carbene (NHC) precursors, containing bicyclic pyrrolo[1,2- c]imidazole framework, were prepared from N-(tert-butoxycarbonyl)-L-proline (1-Boc-L-proline). The sequential attachment of nitrogen nucleophiles and subsequent ring closure gave the desired bicyclic NHC precursors in good yields. The structures of these new NHC precursors were determined on the basis of spectroscopic
由N-(叔丁氧羰基)-L-脯氨酸(1-Boc-L-脯氨酸)制备了一系列新的含双环吡咯并[1,2-c]咪唑骨架的N-杂环卡宾(NHC)前体。氮亲核试剂的顺序连接和随后的闭环以良好的产率得到了所需的双环NHC前体。这些新的NHC前体的结构是根据包括NMR和MS在内的光谱技术确定的。