The Rhodium Catalysed Direct Conversion of Phenols to Primary Cyclohexylamines
作者:Patrick Tomkins、Carlot Valgaeren、Koen Adriaensen、Thomas Cuypers、Dirk E. De Vos
DOI:10.1002/cctc.201800486
日期:2018.9.7
Cyclohexylamines are important intermediates in chemical industry, which are currently produced from petrochemical sources. Phenols, however, are an attractive sustainable feedstock. We here demonstrate the transformation of phenols with ammonia to primary cyclohexylamines. In contrast to previously reported chemistry which used palladium catalysts, we here show that rhodium is an excellent catalyst
The present disclosure provides substituted cyclohexylamine compounds having Formula (I): and the pharmaceutically acceptable salts and solvates thereof, wherein R
1
, R
2a
, R
2b
, R
3a
, R
3b
, R
4
, R
5
, and R
7
are defined as set forth in the specification. The present disclosure is also directed to the use of compounds of Formula I to treat a disorder responsive to the blockade of SMYD proteins such as SMYD3 or SMYD2. Compounds of the present disclosure are especially useful for treating cancer.
Expedient Synthesis of Bridged Bicyclic Nitrogen Scaffolds via Orthogonal Tandem Catalysis
作者:Sovan Biswas、Ben F. Van Steijvoort、Marjo Waeterschoot、Narendraprasad Reddy Bheemireddy、Gwilherm Evano、Bert U. W. Maes
DOI:10.1002/anie.202106716
日期:2021.9.27
Bridged nitrogen bicyclic skeletons have been accessed via unprecedented site- and diastereoselective orthogonal tandem catalysis from readily accessible reactants in a step economic manner. Directed Pd-catalyzed γ-C(sp3)-H olefination of aminocyclohexane with gem-dibromoalkenes, followed by a consecutive intramolecular Cu-catalyzed amidation of the 1-bromo-1-alkenylated product delivers the interesting
Ni-Catalyzed reductive amination of phenols with ammonia or amines into cyclohexylamines
作者:Thomas Cuypers、Thomas Morias、Simon Windels、Carlos Marquez、Cédric Van Goethem、Ivo Vankelecom、Dirk E. De Vos
DOI:10.1039/c9gc02625h
日期:——
for alicyclic compounds, such as primary and N-substituted cyclohexylamines. So far, the latter are mostly produced from non-renewable starting materials like benzene via problematic nitration/reduction or cross-coupling routes. Herein, an efficient reductive amination of phenol with ammonia or amines is demonstrated, for the first time without the need for rare and expensive noble metals and without