Novel (N-heterocyclic carbene)Pd(pyridine)Br<sub>2</sub>
complexes for carbonylative Sonogashira coupling reactions: Catalytic efficiency and scope for arylalkynes, alkylalkynes and dialkynes
作者:Mansur Ibrahim、Imran Malik、Waseem Mansour、Muhammad Sharif、Mohammed Fettouhi、Bassam El Ali
DOI:10.1002/aoc.4280
日期:2018.4
New N,N′‐substituted imidazoliumsalts and their corresponding dibromidopyridine–palladium(II) complexes were successfully synthesized and characterized. Reactions of palladium bromide with the newly synthesized N,N′‐substituted imidazolium bromides (2a and 2b) in pyridine afforded the corresponding new N‐heterocyclic carbene pyridine palladium(II) complexes (3a and 3b) in high yields. Their single‐crystal
Base-mediated ynone-isocyanide [3+2] cycloaddition: a general method to 2,3,4-tri-substituted 1-<i>H</i>-pyrroles and bis-pyrroles
作者:Ankit Kumar、Pawan K. Mishra、Akhilesh K. Verma
DOI:10.1039/d3cc01586f
日期:——
A general method for the synthesis of functionalized pyrroles and bis-pyrroles from ynones under transition-metal-free conditions in good to excellent yields has been developed.