One-Pot Construction of Pyrazoles and Isoxazoles with Palladium-Catalyzed Four-Component Coupling
摘要:
Four-component coupling of a terminal alkyne, hydrazine (hydroxylamine), carbon monoxide, and an aryl iodide furnishes pyrazole or isoxazole derivatives in the presence of a palladium catalyst. The reaction proceeds at room temperature and an ambient pressure of carbon monoxide in an aqueous solvent system.
One‐pot synthesis of unsymmetrical 1,3‐butadiyne derivatives
作者:Zhicai Zhao
DOI:10.1002/bkcs.12762
日期:2023.10
An efficient co-operative Ni/Cu system for Cadiot–Chodkiewicz coupling utilizes CaC2 as the alkyne source. The advantage of this cross-coupling reaction lies in the low cost of using cheap and readily available raw materials and the simplicity of operation. A series of functionalized diaryl, aryl-alkyl, and aryl-heteroaryl 1,3-diynes are obtained in moderate to high yields.
One-Pot Construction of Pyrazoles and Isoxazoles with Palladium-Catalyzed Four-Component Coupling
作者:Mohamed S. Mohamed Ahmed、Kei Kobayashi、Atsunori Mori
DOI:10.1021/ol051841j
日期:2005.9.1
Four-component coupling of a terminal alkyne, hydrazine (hydroxylamine), carbon monoxide, and an aryl iodide furnishes pyrazole or isoxazole derivatives in the presence of a palladium catalyst. The reaction proceeds at room temperature and an ambient pressure of carbon monoxide in an aqueous solvent system.