Synthesis and in Vitro Cytotoxic Evaluation of New Derivatives of Pyrido[1,2-a]benzimidazolic Ring System: The Pyrido[1',2':1,2]imidazo[4,5-h]quinazolines.
在碘化铜(CuI)存在下,以分子碘(I 2)为唯一氧化剂,进行了N-芳基烯胺的分子内C–H官能化反应。本文所述的高效且通用的合成方法与N-杂芳基和N-芳基取代的烯胺兼容,并通过I 2生成各种咪唑并[1,2- a ]吡啶和吲哚衍生物介导的氧化性C–N和C–C键的形成。这种无配体的C–H官能化方法也可以与粗制烯胺一起使用,这可以直接从芳胺和酮(或炔烃)直接合成产物,而无需纯化烯胺中间体。
Elements as Direct Feedstocks for Organic Synthesis: Fe/I<sub>2</sub>/O<sub>2</sub> for Diamination of 2-Cyclohexenones with 2-Aminopyrimidine and 2-Aminopyridines
Elements as feedstocks for organic synthesis, the trio of metallic iron, molecular iodine, and dioxygen, were found to be an excellent tool for oxidative regioselectivediamination of conjugated enones with 2-aminopyrimidine (a guanidine surrogate) and 2-aminopyridines leading to unaromatized coupled products in moderate to good yields.
A practical intramolecular C–H functionalization reaction of N-aryl enamines has been carried out with molecular iodine (I2) as the sole oxidant in the presence of copper iodide (CuI). The efficient and versatile synthetic method described here is compatible with both N-heteroaryl and N-aryl substituted enamines and produces diverse imidazo[1,2-a]pyridine and indole derivatives via I2-mediated oxidative
在碘化铜(CuI)存在下,以分子碘(I 2)为唯一氧化剂,进行了N-芳基烯胺的分子内C–H官能化反应。本文所述的高效且通用的合成方法与N-杂芳基和N-芳基取代的烯胺兼容,并通过I 2生成各种咪唑并[1,2- a ]吡啶和吲哚衍生物介导的氧化性C–N和C–C键的形成。这种无配体的C–H官能化方法也可以与粗制烯胺一起使用,这可以直接从芳胺和酮(或炔烃)直接合成产物,而无需纯化烯胺中间体。
Synthesis and in Vitro Cytotoxic Evaluation of New Derivatives of Pyrido[1,2-a]benzimidazolic Ring System: The Pyrido[1',2':1,2]imidazo[4,5-h]quinazolines.
Access to the original series of pyrido[1',2':1,2]imidazo[4,5-h]quinazoline was developed from a 1,3-dicarbonyl unit with some “N-C-N” bisnucleophilic reagents and the derivatives obtained were evaluated for in vitro cytotoxic activities against HL60 and A2780 cells. All compounds exhibited cytotoxic activitise on resistant cell lines (MDR+; HL60R and A2780R) with no resistance phenomena.