Multicomponent Multicatalyst Reactions (MC)2R: One-Pot Synthesis of 3,4-Dihydroquinolinones
摘要:
A Rh/Pd/Cu catalyst system led to an efficient synthesis of dihydroquinolinones in one-pot, two operations. The reaction features the first triple metal-catalyzed transformations in one reaction vessel, without any intermediate workup. The conjugate-addition/amidation/amidation reaction sequence is highly modular, divergent, and practical.
Multicomponent Multicatalyst Reactions (MC)2R: One-Pot Synthesis of 3,4-Dihydroquinolinones
摘要:
A Rh/Pd/Cu catalyst system led to an efficient synthesis of dihydroquinolinones in one-pot, two operations. The reaction features the first triple metal-catalyzed transformations in one reaction vessel, without any intermediate workup. The conjugate-addition/amidation/amidation reaction sequence is highly modular, divergent, and practical.
Cascade Palladium Catalysis: A Predictable and Selectable Regiocontrolled Synthesis of<i>N</i>-Arylbenzimidazoles
作者:Nathan T. Jui、Stephen L. Buchwald
DOI:10.1002/anie.201306007
日期:2013.10.25
choice: The palladium‐catalyzed cascade reaction of 2‐chloroaryl sulfonates with arylamine and amide nucleophiles provides direct access to N‐arylbenzimidazoles. This strategy selectively produces the heterocycles based on chemoselective oxidative addition. 2‐Chloroaryl triflates (Tf) produce one regioisomer and the corresponding 2‐chloroaryl mesylates (Ms) deliver the other in a selectable manner.