Hits:

Indexed by:期刊论文

Date of Publication:2017-07-17

Journal:ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Included Journals:SCIE、EI、PubMed

Volume:56

Issue:30

Page Number:8692-8696

ISSN No.:1433-7851

Key Words:biomimetic hydrogenation; molecular flasks; proton reduction; renewable active sites; supramolecular chemistry

Abstract:Using small molecules with defined pockets to catalyze chemical transformations resulted in attractive catalytic syntheses that echo the remarkable properties of enzymes. By modulating the active site of a nicotinamide adenine dinucleotide (NADH) model in a redox-active molecular flask, we combined biomimetic hydrogenation with in situ regeneration of the active site in a one-pot transformation using light as a clean energy source. This molecular flask facilitates the encapsulation of benzoxazinones for biomimetic hydrogenation of the substrates within the inner space of the flask using the active sites of the NADH models. The redox-active metal centers provide an active hydrogen source by light-driven proton reduction outside the pocket, allowing the in situ regeneration of the NADH models under irradiation. This new synthetic platform, which offers control over the location of the redox events, provides a regenerating system that exhibits high selectivity and efficiency and is extendable to benzoxazinone and quinoxalinone systems.