Mechanistic Studies of Pd-Catalyzed Regioselective Aryl CH Bond Functionalization with Strained Alkenes: Origin of Regioselectivity
作者:David I. Chai、Praew Thansandote、Mark Lautens
DOI:10.1002/chem.201100210
日期:2011.7.11
Mechanisticstudies of a palladium‐catalyzed regioselective aryl CH functionalization of 2‐pyrrole phenyl iodide with norbornene are presented. Kinetic and spectroscopic analyses together with crystallographic data provide evidence for intermediates in a proposed stepwise mechanism. On the basis of the mechanisticstudies, the origin of the regioselectivity is due to a ligand exchange between I− and
Pd‐Catalyzed One‐Pot Sequential Sonogashira Coupling and Dual Annulations Cascade for the Synthesis of Benzofuro[3,2‐
<i>c</i>
]‐Triazalo/Pyrrolo‐Quinolines
作者:Dipak B. Deokar、Soumi Laha、B. Sridhar、Dharmendra Kumar Tiwari、Pravin R. Likhar
DOI:10.1002/adsc.202200785
日期:2022.11.22
Palladium-catalyzed coupling reaction followed by dual annulation has been achieved for the synthesis of various triazolo/pyrrolo fused benzofuro-quinolines from readily available starting materials. The developed protocol proceeds through palladium-catalyzed Sonogashira coupling, benzannulation followed by C−Hactivation triggered second annulationreactioncascades in a single pot. In particular