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A Well‐Defined Pd Hybrid Material for the Z ‐Selective Semihydrogenation of Alkynes Characterized at the Molecular Level by DNP SENS
Author(s) -
Conley Matthew P.,
Drost Ruben M.,
Baffert Mathieu,
Gajan David,
Elsevier Cornelis,
Franks W. Trent,
Oschkinat Hartmut,
Veyre Laurent,
Zagdoun Alexandre,
Rossini Aaron,
Lelli Moreno,
Lesage Anne,
Casano Gilles,
Ouari Olivier,
Tordo Paul,
Emsley Lyndon,
Copéret Christophe,
Thieuleux Chloé
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201302484
Subject(s) - moiety , carbene , chemistry , nuclear magnetic resonance spectroscopy , combinatorial chemistry , stereochemistry , organic chemistry , catalysis
Direct evidence of the conformation of a Pd–N heterocyclic carbene (NHC) moiety imbedded in a hybrid material and of the Pd–NHC bond were obtained by dynamic nuclear polarization surface‐enhanced NMR spectroscopy (DNP SENS) at natural abundance in short experimental times (hours). Overall, this silica‐based hybrid material containing well‐defined Pd–NHC sites in a uniform environment displays high activity and selectivity in the semihydrogenation of alkynes into Z‐ alkenes (see figure).