[HTML][HTML] Ultrasound-promoted green approach for the synthesis of sulfonamides using natural, stable and reusable Natrolite nanozeolite catalyst at room temperature

M Nasrollahzadeh, A Ehsani… - Ultrasonics …, 2014 - Elsevier
Natural Natrolite nanozeolite has been investigated as an efficient and reusable catalyst for
the N-sulfonylation of amines under ultrasound irradiation at room temperature. Compared …

Fabrication, characterization and application of nanopolymer supported copper (II) complex as an effective and reusable catalyst for the CN bond cross-coupling …

M Nasrollahzadeh, A Rostami-Vartooni… - Journal of Molecular …, 2014 - Elsevier
This paper reports on the synthesis and use of nanopolymer supported copper (II) complex,
as separable catalysts for N-arylation of sulfonamides with arylboronic acids in water. This …

Control of Helix Formation in Vinylogous γ-Peptides by (E)- and (Z)-Double Bonds:  A Way to Ion Channels and Monomolecular Nanotubes

C Baldauf, R Günther, HJ Hofmann - The Journal of Organic …, 2005 - ACS Publications
A complete overview on the alternative and competitive helices in vinylogous γ-peptides is
given, which was obtained on the basis of a systematic conformational analysis at various …

Functionalized chiral vinyl aminosulfoxonium salts: Asymmetric synthesis and application to the synthesis of enantiopure unsaturated prolines, β, γ-dehydro amino …

SK Tiwari, HJ Gais, A Lindenmaier… - Journal of the …, 2006 - ACS Publications
Methylation of the enantiopure functionalized vinyl sulfoximines 5a− e and 14a− d followed
by a F-ion or DBU-mediated isomerization of the vinyl aminosulfoxonium salts 7a− e and …

Dynamic 1H NMR Spectroscopic Study of the Ring Inversion in N-Sulfonyl MorpholinesStudies on N−S Interactions

AR Modarresi-Alam, HA Amirazizi… - The Journal of …, 2009 - ACS Publications
The effect of the exocyclic conjugation, via d− p orbital interaction and/or negative
hyperconjugation (anomeric effect) of the N− S bond, on the inversion of the morpholine ring …

Structure elucidation and theoretical investigation of key steps in the biogenetic pathway of schisanartane nortriterpenoids by using DFT methods

WL Xiao, C Lei, J Ren, TG Liao, JX Pu… - … A European Journal, 2008 - Wiley Online Library
Abstract Rubrifloradilactone C (4), a novel bioactive nortriterpenoid, along with four other
nortriterpenoids (1–3, 5) were isolated from Schisandra rubriflora. The structure of 4 was …

Computational Elucidation of the Solvent-Dependent Addition of 4-Hydroxy-2-nonenal (HNE) to Cysteine and Cysteinate Residues

B Olasz, B Fiser, M Szőri, B Viskolcz… - The Journal of Organic …, 2022 - ACS Publications
The lipid peroxidation end product, 4-hydroxy-2-nonenal (HNE), is a secondary mediator of
oxidative stress due to its strong ability to form adducts to the side chains of lysine, histidine …

A base-controlled regioselective synthesis of allyl and vinyl phenyl sulfones

D Dana, AR Davalos, G Subramaniam, N Afzal… - Tetrahedron …, 2013 - Elsevier
A reaction of diethyl phenylsulfonylmethylphosphonate with 2-arylacetaldehydes in the
presence of a catalytic excess of sodium hydride (1.1 equiv) yields allyl phenyl sulfones in …

Diastereoselective β-Hydroxy Vinylsulfone Isomerizations

GW O'Neil, TD Clark, AP Jones, C Wallace… - Organic & …, 2025 - pubs.rsc.org
Vinylic phenylsulfones containing a β-hydroxyl stereocenter undergo a diastereoselective
isomerization to the corresponding allylic isomer upon treatment with 1, 8-diazabicyclo (5.4 …

Unexpected Steric Effects of “Remote” Alkyl Groups on the Rate of Conjugate Additions to Alkyl α, β-Ethylenic Sulfones, Sulfoxides, and Esters

AR Usera, GH Posner - The Journal of Organic Chemistry, 2007 - ACS Publications
Examination of conjugated ethylenic sulfones, sulfoxides, and esters in Michael-type
addition reactions reveals, for the first time, that the size of the heteroatom-attached alkyl …