Metal-organic frameworks containing nitrogen-donor ligands for efficient catalytic organic transformations
申请人:The University of Chicago
公开号:US10647733B2
公开(公告)日:2020-05-12
Metal-organic framework (MOFs) compositions based on nitrogen donor-based organic bridging ligands, including ligands based on 1,3-diketimine (NacNac), bipyridines and salicylaldimine, were synthesized and then post-synthetically metalated with metal precursors, such as complexes of first row transition metals. Metal complexes of the organic bridging ligands could also be directly incorporated into the MOFs. The MOFs provide a versatile family of recyclable and reusable single-site solid catalysts for catalyzing a variety of asymmetric organic transformations. The solid catalysts can also be integrated into a flow reactor or a supercritical fluid reactor.
Palladium complexes containing bis(oxazolines): stoichiometric versus catalytic allylic alkylation
作者:Montserrat Gómez、Susanna Jansat、Guillermo Muller、Miguel A. Maestro、José Mahía Saavedra、Mercè Font-Bardía、Xavier Solans
DOI:10.1039/b007743g
日期:——
for complexes containing 1,2-bis(oxazolinyl)benzene, endo and exo, with the diasteromeric excess of ca. 40% for type 1 complexes and ca. 75% for type 2 complexes. The catalytic behaviour of the palladium systems with the ligands described was tested for a model allylicalkylationreaction. The Pd/bis(oxazolinyl)benzene ((R,R)-A, (S,S)-B) catalytic systems showed low activity, but good asymmetric inductions
Catalytic reduction of acetophenone with transition metal systems containing chiral bis(oxazolines)
作者:Montserrat Gómez、Susanna Jansat、Guillermo Muller、Michel C Bonnet、Jérémy A.J Breuzard、Marc Lemaire
DOI:10.1016/s0022-328x(02)01767-9
日期:2002.10
The catalytic behaviour of several Ru, Rh and Ir systems containing bis(oxazoline) ligands (1–6) has been tested in the asymmetric reduction of acetophenone (7) to give 1-phenylethanol (8) by hydrogenation (Ir systems), transfer hydrogenation (Ir and Ru systems) and hydrosilylation (Ir and Rh systems). Ligands 1 and 3 gave good activities, obtaining the best asymmetric induction with Ir–1 system in
Efficacious and rapid metal- and solvent-free synthesis of enantiopure oxazolines
作者:Rym Hassani、Alexandre Requet、Sylvain Marque、Anne Gaucher、Damien Prim、Yakdhane Kacem、Béchir Ben Hassine
DOI:10.1016/j.tetasy.2014.08.010
日期:2014.10
A rapid and efficient synthesis of oxazolines was performed starting from various nitriles using microwave irradiation combined to metal- and solvent-free conditions to afford high to quantitative yields of the targeted heterocycles. (C) 2014 Elsevier Ltd. All rights reserved.
Gomez, Montserrat; Jansat, Susanna; Muller, Guillermo, Journal of the Chemical Society. Dalton Transactions (2001), 2001, # 9, p. 1432 - 1439
作者:Gomez, Montserrat、Jansat, Susanna、Muller, Guillermo、Maestro, Miguel A.、Saavedra, Jose Mahia、Font-Bardia, Merce、Solans, Xavier