catalytic reactions using transition metals is an important challenge in organic chemistry in which the intermediates are related to those produced in the classical cross-couplingreactions. As part of our research program devoted to the development of metal-catalyzed reactions using indium organometallics, a protocol for the C⁻H activation and C⁻C coupling of 2-arylpyridines with triorganoindium reagents
Rhodium-Catalyzed Allylic Substitution Reactions with Indium(III) Organometallics
作者:Ricardo Riveiros、Rubén Tato、José Pérez Sestelo、Luis A. Sarandeses
DOI:10.1002/ejoc.201200104
日期:2012.5
novel rhodium-catalyzed allylic substitution reaction using indium organometallics is reported. Aryl- and heteroarylindium reagents reacted in THF at 80 °C with primary and secondary allyl halides and their derivatives under rhodium(I) catalysis to afford the α-substituted products in good yields and with high regio- and stereoselectivity. The reaction takes place with substoichiometric amounts of
A phosphine-free, heterogeneous palladium-catalyzed atom-efficient carbonylative cross-coupling of triorganoindiums with aryl halides leading to unsymmetrical ketones
作者:Shengyong You、Ruian Xiao、Haiyi Liu、Mingzhong Cai
DOI:10.1039/c7nj02969a
日期:——
The first phosphine-free heterogeneous palladium-catalyzed carbonylative cross-coupling of arylhalides with triorganoindiums has been developed that proceeds smoothly under 1 or 2.5 atm of carbon monoxide in THF at 68 °C and provides a general and powerful tool for the synthesis of various valuable unsymmetrical ketones with high atom-economy, good yield, and recyclability of the catalyst. Our system
Palladium-Catalyzed Coupling of Thiol Esters with Aryl and Primary and Secondary Alkyl Organoindium Reagents
作者:Bryan W. Fausett、Lanny S. Liebeskind
DOI:10.1021/jo050110u
日期:2005.6.1
undergo palladium-catalyzedcross-coupling under mild conditions to give ketones in moderate to excellent yields. Aryl and primary/secondary alkyl organoindium reagents can be used as coupling partners. This method has two advantages over the cross-coupling of thiol esters with boron and tin reagents: (1) no added copper reagent is required to mediate the reaction and (2) for the case of alkyl transfer
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