Results 21 to 30 of about 20,785 (192)

6-Nitro-7-tosylquinazolin-4(3H)-one

open access: yesMolbank, 2020
Sulfones are important building blocks in the construction of biologically active molecules or functional materials. The sulfonyl functional group in sulfones is so versatile that it can act as either a nucleophile, an electrophile, or a radical in ...
Thi Ngoc Nguyen   +8 more
doaj   +1 more source

Synthesis of Chiral, Enantiopure Allylic Amines by the Julia Olefination of α-Amino Esters

open access: yesMolecules, 2016
The four-step conversion of a series of N-Boc-protected l-amino acid methyl esters into enantiopure N-Boc allylamines by a modified Julia olefination is described. Key steps include the reaction of a lithiated phenylalkylsulfone with amino esters, giving
Fabio Benedetti   +5 more
doaj   +1 more source

Synthesis and Oxidative Transformations of New Chiral Pinane-Type γ-Ketothiols: Stereochemical Features of Reactions

open access: yesMolecules, 2021
Chiral γ-ketothiols, thioacetates, thiobenzoate, disulfides, sulfones, thiosulfonates, and sulfonic acids were obtained from β-pinene for the first time.
Olga M. Lezina   +4 more
doaj   +1 more source

Crystal structure of 1,3-diallyl-1,3,3a,4,7,7a-hexahydro-4,7-methano-2-benzothiophene 2,2-dioxide

open access: yesActa Crystallographica Section E, 2014
The title compound C15H20O2S, was identified as a product of diallylation of the meso-isomer of the corresponding norbornene sulfone, and it is an achiral compound.
Sambasivarao Kotha, Rama Gunta
doaj   +1 more source

Benzhydryl phenyl sulfone [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2009
In the title compound, C(19)H(16)O(2)S, the sulfur-bound phenyl group is approximately parallel to one of the two phenyl rings of the benzhydryl group, making a dihedral angle of 12.53 (10)°, and forms a dihedral angle of 41.25 (9)° with the other phenyl ring. In the crystal, weak C-H⋯O inter-actions form a two-dimensional network propagating along the
Peter Mayer   +2 more
openaire   +3 more sources

Homopolymer self-assembly of poly(propylene sulfone) hydrogels via dynamic noncovalent sulfone–sulfone bonding [PDF]

open access: yesNature Communications, 2020
Abstract Natural biomolecules such as peptides and DNA can dynamically self-organize into diverse hierarchical structures. Mimicry of this homopolymer self-assembly using synthetic systems has remained limited but would be advantageous for the design of adaptive bio/nanomaterials.
Fanfan Du   +9 more
openaire   +3 more sources

Design and synthesis of polycyclic sulfones via Diels–Alder reaction and ring-rearrangement metathesis as key steps

open access: yesBeilstein Journal of Organic Chemistry, 2015
Here, we describe a new and simple synthetic strategy to various polycyclic sulfones via Diels–Alder reaction and ring-rearrangement metathesis (RRM) as the key steps.
Sambasivarao Kotha, Rama Gunta
doaj   +1 more source

Membrane-free selective oxidation of thioethers with water over a nickel phosphide nanocube electrode

open access: yesCell Reports Physical Science, 2021
Summary: Developing a membrane-free oxidation reaction, especially using water as the oxygen source, to generate high-value chemicals with high selectivity for replacing low-value O2 over a cost-effective catalyst is significant.
Shuyan Han   +6 more
doaj   +1 more source

Sustainable and versatile selective oxidation of sulfides to sulfones in deep eutectic solvent

open access: yesCurrent Research in Green and Sustainable Chemistry
Deep eutectic solvents (DES) have emerged as a promising class of solvents that offer unique properties and applications in various fields. The oxidation of sulfide with readily available oxidants remains a major challenge.
Fatemeh Armandsefat   +3 more
doaj   +1 more source

Regioselective synthesis of chiral dimethyl-bis(ethylenedithio)tetrathiafulvalene sulfones

open access: yesBeilstein Journal of Organic Chemistry, 2015
Enantiopure (R,R) and (S,S)-dimethyl-bis(ethylenedithio)tetrathiafulvalene monosulfones have been synthesized by the aerial oxidation of the chiral dithiolates generated from the propionitrile-protected precursors.
Flavia Pop, Narcis Avarvari
doaj   +1 more source

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