作者:Renyuan Pony Yu、David Hesk、Nelo Rivera、István Pelczer、Paul J. Chirik
DOI:10.1038/nature16464
日期:2016.1.14
of C–H bonds in drugs and the relative ease and low cost associated with tritium (3H) make it an ideal radioisotope with which to conduct ADME studies early in the drug development process. Here we describe an iron-catalysed method for the direct 3H labelling of pharmaceuticals by hydrogenisotopeexchange, using tritiumgas as the source of the radioisotope. The site selectivity of the iron catalyst
Ruthenium Dihydrogen Complex for C–H Activation: Catalytic H/D Exchange under Mild Conditions
作者:Martin H. G. Prechtl、Markus Hölscher、Yehoshoa Ben‐David、Nils Theyssen、David Milstein、Walter Leitner
DOI:10.1002/ejic.200800359
日期:2008.8
Catalytic H/D-exchange reactions were studied with [Ru(dtbpmp)(η2-H2)(H)2] (1) as catalyst. Under mild reaction conditions (25–75 °C) a wide range of arenes and olefins undergo H/D exchange with [D6]benzene. A preference for protons at sp2 carbons was observed with conversions up to >90 % and significant regioselectivity in certain cases. For more reaction insights NMR-based kinetic studies were performed
Facile H/D Exchange at (Hetero)Aromatic Hydrocarbons Catalyzed by a Stable Trans-Dihydride N-Heterocyclic Carbene (NHC) Iron Complex
作者:Subhash Garhwal、Alexander Kaushansky、Natalia Fridman、Linda J. W. Shimon、Graham de Ruiter
DOI:10.1021/jacs.0c07689
日期:2020.10.7
pincer complexes have played an important role in homogeneous catalysis during the last ten years. Yet, despite intense research efforts, the synthesis of iron PCcarbeneP pincer complexes has so far remained elusive. Here we report the synthesis of the first PCNHCP functionalized iron complex [(PCNHCP)FeCl2] (1) and the reactivity of the corresponding trans-dihydride iron(II) dinitrogencomplex [(PCNHCP)Fe(H)2N2)]
H/D Exchange Processes Catalyzed by an Iridium-Pincer Complex
作者:Vlad M. Iluc、Alexey Fedorov、Robert H. Grubbs
DOI:10.1021/om201049p
日期:2012.1.9
A PNP-pincer iridium dihydride performs the HID exchange between aromatic substrates and tertiary hydrosilanes and D2O or C6D6. Complete incorporation of deuterium into sterically accessible C-ar-H and Si-H bonds was observed at a moderate temperature of 80 degrees C.
H/D Exchange at Aromatic and Heteroaromatic Hydrocarbons Using D2O as the Deuterium Source and Ruthenium Dihydrogen Complexes as the Catalyst
作者:Martin H. G. Prechtl、Markus Hölscher、Yehoshoa Ben-David、Nils Theyssen、Rebekka Loschen、David Milstein、Walter Leitner