We have developed a highly efficient method for the copper-catalyzed coupling of 2-haloacetanilides with phosphine oxides and phosphites in the presence of a catalytic amount of copper(I) iodide and N-methylpyrrolidine-2-carboxamide under mild conditions (45-55 °C); the P-arylation products were synthesized in good to excellent yields in short times using 2-bromotrifluoroacetanilides and 2-iodotrifluoroacetanilides
Facile Access to Polysubstituted Indoles via a Cascade Cu-Catalyzed Arylation−Condensation Process
作者:Yu Chen、Xiaoan Xie、Dawei Ma
DOI:10.1021/jo702059q
日期:2007.11.1
hydrolysis delivered 2,3-disubstituted indoles. The halides bearing a strong electron-withdrawing group in the 4-position can undergo in situ basic hydrolysis to provide the corresponding indoles. Polysubstituted indoles can be prepared from substituted 2-halotrifluoroacetanilides with high regioselectivity.
CuI / l-脯氨酸催化的2-卤代三氟乙酰苯胺与β-酮酯和酰胺的交叉偶联,然后进行原位酸性水解,生成了2,3-二取代的吲哚。在4-位带有强吸电子基团的卤化物可进行原位碱性水解以提供相应的吲哚。可以由具有高区域选择性的取代的2-卤代三氟乙酰苯胺制备多取代的吲哚。
One-Pot Palladium-Catalyzed Synthesis of Selectively Substituted Phenanthridines by Sequential Aryl-Aryl and Heck Couplings, Aza-Michael and Retro-Mannich Reactions
作者:Nicola Della Ca'、Elena Motti、Antonio Mega、Marta Catellani
DOI:10.1002/adsc.201000114
日期:——
A catalytic synthesis of selectivelysubstitutedphenanthridines is achieved through a reaction sequence involving palladium/norbornene‐catalyzed unsymmetrical aryl‐aryl and Heckcouplings followed by aza‐Michael and retro‐Mannich reactions. In spite of the many steps involved the method is very simple and allows the formation of selectivelysubstitutedphenanthridines under mild conditions in a straightforward
Aminopurine and aminoquinazoline scaffolds for development of potential dengue virus inhibitors
作者:Akkaladevi Venkatesham、Milind Saudi、Suzanne Kaptein、Johan Neyts、Jef Rozenski、Mathy Froeyen、Arthur Van Aerschot
DOI:10.1016/j.ejmech.2016.10.008
日期:2017.1
an imidazole, pyrazine or fenyl ring as the central scaffold, with many congeners displaying strong inhibitory effects against dengue virus (DENV) in cell-based assays. Following up on some literature reports, the rationale was borne out to preserve the pending groups, now attached to either a 2,6-diaminopurine or 2,4-diaminoquinazoline scaffold. Synthetic efforts turned out less straightforward than
Synthesis of Tetrahydropyrrolo[1,2-a]quinoxalines and Tetrahydropyrido[1,2-a]quinoxalines via a One-Pot CuI-Catalyzed Aryl Amination-Hydrolysis-Condensation Process
作者:Dawei Ma、Lanting Xu、Yongwen Jiang
DOI:10.1055/s-0030-1258030
日期:2010.9
CuI-catalyzed coupling of 2-halotrifluoroacetanilides with L-proline or pipecolinic acid in DMSO at 90―110 °C followed by in situ hydrolysis at 100 °C afforded tetrahydropyrrolo[1,2-a]quinoxalines or tetrahydropyrido[1,2-a]quinoxalines.
CuI 催化 2-卤代三氟乙酰苯胺与 L-脯氨酸或哌可啉酸在 DMSO 中在 90-110 °C 下偶联,然后在 100 °C 下原位水解,得到四氢吡咯并[1,2-a]喹喔啉或四氢吡啶并[1,2-a] ]喹喔啉。