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Chelation‐Driven Rearrangement of Primary Alkyl Aminopalladation Products to Stable Trisubstituted Alkyl–Palladium Complexes
Author(s) -
Rosewall Carolyn F.,
Ingalls Erica L.,
Kaminsky Werner,
Michael Forrest E.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201412033
Subject(s) - alkyl , palladium , chemistry , chelation , primary (astronomy) , catalysis , substrate (aquarium) , carbon fibers , organic chemistry , materials science , physics , oceanography , astronomy , composite number , composite material , geology
The formation of highly substituted carbon centers using catalysis has been a widely sought after goal, but complexes of highly substituted carbon atoms with transition metals are rare, and the factors that affect the relative stability of complexes with differentially substituted carbon atoms are poorly understood. In this study, a set of equilibrating alkyl–palladium complexes were subtly tuned to form either a primary or trisubstituted alkyl complex as the more thermodynamically favored state, depending on either the substrate or reaction conditions. An X‐ray crystal structure of the trisubstituted alkyl–palladium complex is presented and compared with the corresponding primary alkyl complex. The mechanism for rearrangement and the factors that drive the change in stability are discussed.