Concept

Butyle

Publications associées (30)

Oriented MFI membranes by gel-less secondary growth of sub-100 nm MFI-nanosheet seed layers

A zeolite membrane fabrication process combining 2D-zeolite nanosheet seeding and gel-free secondary growth is described. This process produces selective molecular sieve films that are as thin as 100 nm and exhibit record high permeances for xylene- and bu ...

2015

2-(Methoxycarbonyl)ethyl as a Removable N-Protecting Group: Synthesis of Indoloisoquinolinones by Pd(II)-Catalyzed Intramolecular Diamination of Alkynes

Qian Wang, Jieping Zhu, Bo Yao, Minh Tu Ha

Pd(II)-catalyzed double cyclization of 1,2-diarylethynes bearing an N-methyl-N-[2-(methoxycarbonyl)ethyl]amino and an aminocarbonyl group at the ortho positions of the two aromatic rings afforded the tetracyclic N-[2-(methoxycarbonyl)-ethyl]indoloisoquinol ...

Amer Chemical Soc2015

Olefin Hydrogenation with Single-Site Gold

Butene hydrogenation activity is intimately connected with the occupied and unoccupied electronic states of gold active site. We prepare well-defined Au(III) sites in IRMOF-3 structure, and tuned the metal density-of-states by replacing the substituent gro ...

Polish Academy of Sciences Warsaw2014

Structural Melting of an Amino Acid Dimer upon Intersystem Crossing

Thomas Rizzo, Ulrich Lorenz

We present a spectroscopic investigation of the excited-state dynamics of the phenylalanine (Phe)/serine (Ser) protonated dimer in the gas phase. Using an ultraviolet (UV) laser pulse, we promote individual isomers to the S1 state and probe their fate with ...

Amer Chemical Soc2014

Prediction Of Organic Aerosol Volatility And Unidentified Functional Group Concentrations From Fourier Transform Infrared (FTIR) Spectroscopy Measurements

Satoshi Takahama, Giulia Ruggeri, Sarah Elizabeth Shipley

Fourier Transform Infrared (FTIR) spectroscopy is used to measure the functional group composition of organic aerosols (Russell et al., 2011). However, certain functional groups are not directly detected by FTIR spectroscopy, either due to fundamental limi ...

2014

Extreme Tuning of Redox and Optical Properties of Cationic Cyclometalated Iridium(III) Isocyanide Complexes

Michael Graetzel, Mohammad Khaja Nazeeruddin, Rosario Scopelliti

We report seven heteroleptic cationic iridium(III) complexes with cyclometalating N-arylazoles and alkyl/aryl isocyanides, ((CN)-N-boolean AND)(2)Ir(CNR)(2), and characterize two of them by crystal structure analysis. The complexes are air- and m ...

American Chemical Society2013

Reactivity Of Arylnitrile Oxides And C-Aroyl-N-Phenylnitrones With 3-Methylenedihydro-(3H)-Furan-2-One And Itaconic Anhydride

Christophe Roussel

1,3-dipolar cycloaddition is a powerful route for the synthesis of five-membered heterocycles. The [3+2] cycloadditions of some alpha-methylene-gamma-buryrolactones, namely 3-methylenedihydro-(3H)-furan-2-one (1) and itaconic anhydride (2) were Studied. Th ...

2009

Preparation of ecteinascidin alkaloids, such as ecteinascidins 583 and 597

Jieping Zhu

The present invention concerns an intermediate of the following formula I in which R 1 and R 2 represent independently of each other a C 1 -C 12 alkyl group, a (C 1 -C 12 alkoxy)carbonyl group, optionally substituted by one, two or three halogen atom, a (C ...

2007

Le concept switch-peptides

Karine Murat

Conformational transitions have found broad interest due to their impact on protein misfolding and self-assembly as key events leading to the development of neurodegenerative diseases. However, investigation of these dynamic events has been limited so far ...

EPFL2006

Influence of the functional group on the synthesis of aminophosphines, diphosphinoamines and iminobiphosphines

Paul Joseph Dyson, Zhaofu Fei

The reaction of the anilines RNH2 [R = C6H4(o-CN), C6H4(p-CN), C6H4(m-CN), C6H4(o-C6H5), C6F5 and C6H4(o-CF3)] with Ph2PCl and inorganic or organic bases in differing stoichiometry and in different solvents has been studied. The electronic properties and s ...

2003

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