skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Heterogeneous Supramolecular Catalysis through Immobilization of Anionic M4L6 Assemblies on Cationic Polymers

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.0c09556· OSTI ID:1839002
 [1];  [2];  [2];  [2]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Tokyo (Japan)
  2. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Although most of the currently developed supramolecular catalysts that emulate enzymatic reactivity with unique selectivity and activity through specific host-guest interactions work under homogeneous conditions, enzymes in nature can operate under heterogeneous conditions as membrane-bound enzymes. In order to develop such a heterogeneous system, an immobilized chiral supramolecular cluster Ga416 (2) was introduced into cross-linked polymers with cationic functionalities. These heterogeneous supramolecular catalysts were used in aza-Prins and aza-Cope reactions and successfully applied to continuous-flow reactions. Additionally, they showed high durability and maintained high turnovers for long periods of time. In sharp contrast to the majority of examples of heterogenized homogeneous catalysts, the newly developed catalysts showed enhanced activity and robustness compared to those exhibited by the corresponding soluble cluster catalyst. An enantioenriched cluster was also immobilized to enable asymmetric catalysis, and activity and enantioselectivity of the supported chiral catalyst were maintained during recovery and reuse experiments and under a continuous-flow process. Significantly, the structure of the ammonium cations in the polymers affected stability, reactivity, and enantioselectivity, which is consistent with the hypothesis that the cationic moieties in the polymer support interact with cluster as an exohedral protecting shell, thereby influencing their catalytic performance.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; JSPS KAKENHI
Grant/Contract Number:
AC02-05CH11231; JP17KK0101
OSTI ID:
1839002
Journal Information:
Journal of the American Chemical Society, Vol. 142, Issue 45; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (55)

Cell Membranes: The Lipid Perspective journal November 2011
Transition state and product diffusion control by polymer–nanocrystal hybrid catalysts journal August 2019
Enabling New Modes of Reactivity via Constrictive Binding in a Supramolecular-Assembly-Catalyzed Aza-Prins Cyclization journal July 2015
On-demand continuous-flow production of pharmaceuticals in a compact, reconfigurable system journal March 2016
Silica-Supported Cationic Gold(I) Complexes as Heterogeneous Catalysts for Regio- and Enantioselective Lactonization Reactions journal May 2015
Asymmetric Carbon-Carbon Bond Formation under Continuous-Flow Conditions with Chiral Heterogeneous Catalysts journal May 2013
How lipids affect the activities of integral membrane proteins journal November 2004
A Single Enantiomer (99 %) Directly from Continuous-Flow Asymmetric Hydrogenation journal July 2013
Resolution of Chiral, Tetrahedral M 4 L 6 Metal−Ligand Hosts 1 journal December 2007
Polymer Structure Dependent Hierarchy in PolyMOC Gels journal September 2016
Reworking Organic Synthesis for the Modern Age: Synthetic Strategies Based on Continuous-Flow Addition and Condensation Reactions with Heterogeneous Catalysts journal February 2020
Reactions of Folded Molecules in Water journal November 2018
Guest Exchange Dynamics in an M4L6 Tetrahedral Host journal January 2006
Ligand Template Strategies for Catalyst Encapsulation journal August 2018
Copolymer-Incarcerated Nickel Nanoparticles with N -Heterocyclic Carbene Precursors as Active Cross-Linking Agents for Corriu–Kumada–Tamao Reaction journal July 2013
Cholesterol modulates glycolipid conformation and receptor activity journal April 2011
Supramolecular Catalysis in Metal–Ligand Cluster Hosts journal April 2015
Design, Formation and Properties of Tetrahedral M 4 L 4 and M 4 L 6 Supramolecular Clusters 1 journal September 2001
Lipid–protein interactions journal May 2011
Deconvoluting the Role of Charge in a Supramolecular Catalyst journal May 2018
Continuous Asymmetric Hydrogenation in Supercritical Carbon Dioxide using an Immobilised Homogeneous Catalyst journal August 2006
General and specific lipid–protein interactions in Na,K-ATPase journal September 2015
Flow fine synthesis with heterogeneous catalysts journal April 2018
A supramolecular microenvironment strategy for transition metal catalysis journal December 2015
Space Integration of Reactions: An Approach to Increase the Capability of Organic Synthesis journal April 2011
A porous metal–organic cage constructed from dirhodium paddle-wheels: synthesis, structure and catalysis journal January 2015
A Supramolecular Strategy for Selective Catalytic Hydrogenation Independent of Remote Chain Length journal July 2019
Converting homogeneous to heterogeneous in electrophilic catalysis using monodisperse metal nanoparticles journal November 2009
Integration of Microreactors with Spectroscopic Detection for Online Reaction Monitoring and Catalyst Characterization journal October 2012
The Big Squeeze:  Guest Exchange in an M 4 L 6 Supramolecular Host journal June 2005
Highly branched and loop-rich gels via formation of metal–organic cages linked by polymers journal November 2015
Efficient immobilisation of Rh-MonoPhos on the aluminosilicate AlTUD-1 journal January 2004
Lipid Rafts As a Membrane-Organizing Principle journal December 2009
Catalysis inside the Hexameric Resorcinarene Capsule journal August 2018
Polysilane-Immobilized Rh–Pt Bimetallic Nanoparticles as Powerful Arene Hydrogenation Catalysts: Synthesis, Reactions under Batch and Flow Conditions and Reaction Mechanism journal August 2018
Metal–salen molecular cages as efficient and recyclable heterogeneous catalysts for cycloaddition of CO 2 with epoxides under ambient conditions journal January 2019
Self-Assembled Tetrahedral Hosts as Supramolecular Catalysts journal September 2018
Enantioselective Catalysis of the Aza-Cope Rearrangement by a Chiral Supramolecular Assembly journal December 2009
A new technique for anchoring homogeneous catalysts journal January 1999
Flow chemistry syntheses of natural products journal January 2013
Using Carbon Dioxide as a Building Block in Continuous Flow Synthesis journal November 2018
Supramolecular Catalysis of Orthoformate Hydrolysis in Basic Solution: An Enzyme-Like Mechanism journal August 2008
Novel Process Windows for Enabling, Accelerating, and Uplifting Flow Chemistry journal April 2013
A Continuous-Flow System for Asymmetric Hydrogenation Using Supported Chiral Catalysts journal December 2011
Supported Catalytically Active Supramolecular Hydrogels for Continuous Flow Chemistry journal November 2019
Site-Selective Functionalization of Linear Diterpenoids through U-Shaped Folding in a Confined Artificial Cavity journal March 2019
Structural basis of PIP2 activation of the classical inward rectifier K+ channel Kir2.2 journal August 2011
Noncovalently Functionalized Dendrimers as Recyclable Catalysts journal August 2001
Regulation of human EGF receptor by lipids journal May 2011
Flow “Fine” Synthesis: High Yielding and Selective Organic Synthesis by Flow Methods journal October 2015
Enabling the Scale-Up of a Key Asymmetric Hydrogenation Step in the Synthesis of an API Using Continuous Flow Solid-Supported Catalysis journal June 2016
Continuous catalytic asymmetric hydrogenation in supercritical CO2 journal January 2004
Characterization of the annular lipid shell of the Sec translocon journal October 2015
Supramolecular Catalysis of a Unimolecular Transformation: Aza-Cope Rearrangement within a Self-Assembled Host journal December 2004
Supramolecular Catalysis of Unimolecular Rearrangements:  Substrate Scope and Mechanistic Insights journal August 2006