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A Practical Approach for Ambient‐Pressure Hydrogenations Using Pd on Porous Glass
Author(s) -
Schmöger Christine,
Stolle Achim,
Bonrath Werner,
Ondruschka Bernd,
Keller Thomas,
Jandt Klaus D.
Publication year - 2009
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200800168
Subject(s) - isomerization , catalysis , inert , double bond , porosity , ambient pressure , chemistry , porous glass , photochemistry , inert gas , atmospheric pressure , organic chemistry , chemical engineering , materials science , inorganic chemistry , physics , oceanography , engineering , thermodynamics , geology
A Pd on porous glass catalyst system was used in the liquid‐phase hydrogenation of terpenoid substrates with dihydrogen at room temperature and atmospheric pressure. A multitude of substances were hydrogenated selectively with yields of 90–100 %. In all experiments, only CC, CN, and NN double bonds were hydrogenated. Studies revealed that carbonyl and aromatic double bonds are inert towards catalytic reduction with dihydrogen under the conditions employed. In some cases, hydrogenation was accompanied by isomerization, so that treatment of β‐pinene, for example, afforded isomeric α‐pinene, which was subsequently hydrogenated to pinane.