A novel and efficient methodology for the construction of quinazolines based on supported copper oxide nanoparticles
作者:Jintang Zhang、Chenmin Yu、Sujing Wang、Changfeng Wan、Zhiyong Wang
DOI:10.1039/c002454f
日期:——
A series of quinazolines were synthesized from 2-aminobenzophenones and benzylic amines in good to excellent yields by employing a new heterogeneous catalyst based on the copper oxide nanoparticles supported on kaolin.
The first Pd/C‐catalyzedoxidative C(sp3)−H bond amination of o‐nitroacetophenones with benzylamines or amino acids proceeding through C−N bond cleavage followed by C−N bond formation by a hydrogen‐transfer strategy was developed. These transformations proceeded smoothly in water to afford the desired quinazolines in moderate to good yields. This protocol has a broad substrate scope and good tolerance
Copper-catalyzed aerobic oxidative decarboxylative amination of arylacetic acids: a facile access to 2-arylquinazolines
作者:Yizhe Yan、Miaomiao Shi、Bin Niu、Xiangping Meng、Changrui Zhu、Gengyao Liu、Ting Chen、Yanqi Liu
DOI:10.1039/c6ra04195g
日期:——
An efficient copper-catalyzed oxidative decarboxylative amination of arylacetic acids with 2-aminobenzoketones and ammonium acetate under oxygen atmosphere was first developed. This reaction represents a novel avenue for 2-arylquinazolines in good...
Palladium-Catalyzed Cross-Coupling of 4-Tosyloxyquinazolines with Organoindium Reagents: An Efficient Route to 4-Substituted Quinazolines
作者:Yiyuan Peng、Xinglin Ye、Jianjun Yuan、Yirong Zhou、Zhihong Deng、Xuechun Mao
DOI:10.1055/s-0035-1562504
日期:——
of 4-functionalized quinazolines in good to excellent yields. Higher yields were obtained by the one-pot reaction of quinazolinone, p-methylbenzenesulfonyl chloride, Pd2(dba)3-/(2-furyl)3P, and organoindium reagent. These methods using organoindium compounds as coupling partners provided an efficient route to 4-(hetero)aryl/alkylquinazolines, especially 4-substituted quinazolines bearing a halogen scaffold
摘要 描述了在温和条件下通过喹唑啉酮的芳基化或烷基化制备4-取代的喹唑啉的有效途径。在K 2 CO 3存在下,通过喹唑啉酮类与对甲基苯磺酰氯的反应获得了4-甲苯磺酰喹唑啉。在Pd 2(dba)3 /(2-呋喃基)3 P的催化下,在四氢呋喃中进行的4-甲苯磺酰氧基喹唑啉与有机铟试剂的交叉偶联反应导致形成4-官能化的喹唑啉,收率好至极佳。通过一锅反应喹唑啉酮,对甲基苯磺酰氯,Pd 2(dba)3获得更高的收率-/(2-呋喃基)3 P和有机铟试剂。这些使用有机铟化合物作为偶联伙伴的方法为制备4-(杂)芳基/烷基喹唑啉,特别是带有卤素骨架的4-取代喹唑啉提供了一条有效途径。 描述了在温和条件下通过喹唑啉酮的芳基化或烷基化制备4-取代的喹唑啉的有效途径。在K 2 CO 3存在下,通过喹唑啉酮类与对甲基苯磺酰氯的反应获得了4-甲苯磺酰喹唑啉。在Pd 2(dba)3 /(2-呋喃基)3 P的催化下,在四