Results 31 to 40 of about 29,810 (265)
Metal-mediated intramolecular hydroamination and hydro(acy)alkoxylation reactions [PDF]
, 2012 This PhD thesis describes work undertaken to effect asymmetric catalysis in hydroamination and hydro(acy)alkoxylation reactions of allenes. The introductory Chapter provides an overview of recent advances in asymmetric heterofunctionalisation reactions ...
Arbour, Jannine Louise +1 more
core +1 more source
Molecules, 2020 An efficient asymmetric synthesis of GlaxoSmithKline’s potent PDE4 inhibitor was accomplished in eight steps from a catechol-derived nitroalkene. The key intermediate (3-acyloxymethyl-substituted 1,2-oxazine) was prepared in a straightforward manner by ...
Evgeny V. Pospelov +3 more
doaj +1 more source
Catalytic Asymmetric Synthesis of Bicycloprolines by a 1,3-Dipolar Cycloaddition/Intramolecular Alkylation Strategy [PDF]
, 2016 This document is the Accepted Manuscript version of a Published Work that appeared in final form inJournal of Organic Chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher.
Adrio, Javier +4 more
core +3 more sources
Tetraethyl(pyrrolidine-2,2-diyl)bisphosphonate [PDF]
Molecules, 2001 The synthesis of the title compound is already described [1, 2] and we report here the fully optimized procedure.[...]
Olive, Gilles, Jacques, Alain
openaire +3 more sources
Copper(I)-catalyzed asymmetric 1,3-dipolar cycloaddition of 1,3-enynes and azomethine ylides
Nature Communications, 2023 Herein, we report a copper(I)-catalyzed asymmetric 1,3-dipolar cycloaddition of azomethine ylides and 1,3-enynes, which provides a series of chiral poly-substituted pyrrolidines in high regio-, diastereo-, and enantioselectivities. Both 4-aryl-1,3-enynes
Bo-Ran Wang +6 more
doaj +1 more source
Molecules, 2020 The reaction of meso-tetrakis(pentafluorophenyl)porpholactone with azomethine ylides and nitrones affords pyrrolidine-fused and isoxazolidine-fused dihydroporpholactones that display, respectively, isobacteriochlorin- and chlorin-type UV–Vis spectra ...
Ana F. R. Cerqueira +5 more
doaj +1 more source
Recent advances in the catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides [PDF]
, 2014 Catalytic asymmetric 1,3-dipolar cycloadditions of azomethine ylides have turned out to be one of the most efficient methods for the preparation of enantioenriched pyrrolidines.
Adrio, Javier, Carretero, Juan C.
core +2 more sources
Depolymerization and Reuse of Polycarbonates: Emerging Classes, Mechanisms and Challenges
Angewandte Chemie, EarlyView.This review collects the latest developments in the area of chemical and catalytic polycarbonate recycling strategies and includes the controlled degradation of similar types of macromolecules. Apart from the main strategies for deconstruction, the key mechanistic features of these depolymerization processes are also discussed together with the ...
Davide Rigo +4 more
wiley +2 more sources
IUCrData, 2016 In the title compound, C34H25N3O4·0.5CH2Cl2, which crystallized as a dichloromethane hemisolvate, the central 1-methylpyrrolidine ring adopts an envelope conformation with the N atom as the flap.
J. M. Joseph +2 more
doaj +1 more source
Angewandte Chemie, EarlyView.Metal‐catalyzed enantioconvergent substitutions of unactivated cyclic electrophiles by organometallic nucleophiles have not previously been reported. Herein, a chiral nickel catalyst is described that achieves this objective, coupling 3‐iodopyrrolidine derivatives with arylzinc nucleophiles.
Ting Hei Matthew Wong +2 more
wiley +2 more sources