نتایج جستجو برای: heck cross

تعداد نتایج: 491365  

2017
Chun Zhang Brandon Tutkowski Ryan J. DeLuca Leo A. Joyce Olaf Wiest Matthew S. Sigman

In a Heck reaction using multi-substituted alkenes, the initial syn-carbopalladation sets two vicinal stereocenters by virtue of the migratory insertion process. Unfortunately, the resultant Pd–alkyl undergoes facile b-hydride elimination, which generally eliminates the stereochemistry imparted by migratory insertion. Recently, we have reported a modern variant of the Heck reaction, wherein the...

Journal: :Organometallics 2016

Journal: :SynOpen 2023

Abstract

2015
Christopher W. D. Gallop O. Navarro

Chapter 1 gives the reader a background on cross-coupling reactions, in particular palladium mediated couplings. Furthermore the importance of ligands, including phosphines and N-heterocyclic carbenes (NHC), in such cross-coupling reactions is explored. Chapter 2 provides a background to the reductive lithiation of phosphines, followed by an account of our investigation of BINAP functionalisati...

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