Results 91 to 100 of about 13,320 (204)

Enantiospecific cross-coupling of cyclic alkyl sulfones [PDF]

Methods to form carbon–carbon bonds efficiently and with control of stereochemistry are critical for the construction of complex molecules. Cross-coupling reactions are among the most efficient and widely used reactions to construct molecules, with ...
Tahara, Yasuyo, Ariki, Zachary T, Schiele, Stefanie, Alpin, Jana, Crudden, Cathleen M, Nambo, Masakazu, Yokogawa, Daisuke, Nolla-Saltiel, Roberto   +7 more
core   +1 more source

Kinetically Controlled, Stereoselective Formation of Vinylic Sulfones by Conjugate Addition of Lithiated 3-Alkylallylic Sulfones to Cyclic Enones

, 1989
Like the corresponding lithiated sulfoxides, lithiated but-2-enyl and oct-2-enyl sulfones undergo kinetically controlled, highly diastereoselective aprotic conjugate addition to five-membered cyclic enones in tetrahydrofuran to deliver vinylic sulfones ...
Haynes, Richard K., Vonwiller, Simone C., Schober, Paul A., Binns, Malcolm R., Katsifis, Andrew G.   +4 more
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Efficient Conversion of Sulfones into β-Keto Sulfones by N-Acylbenzotriazoles^§

, 2016
Acyclic sulfones 4a−f and alicyclic sulfone 7 react with readily available N-acylbenzotriazoles 3a−g (derived from aliphatic, aromatic, and heteroaromatic carboxylic acids) to provide the corresponding β-keto sulfones 5a−n and 8a−c, respectively, in good
Ashraf A. A. Abdel-Fattah (2429563), Alan R. Katritzky (455231), Mingyi Wang (91634)   +2 more
core   +1 more source

Reactions of 2-oxo-2-polyfluoroalkyl-sulfones and –sulfamides with nucleophiles

, 2016
Reactions of 2-oxo-2-polyfluoroalkyl-sulfones and -sulfamides with heteronucleophiles—amines, alcohols, thiols and trialkyl phosphites—are studied.
Yuriy G. Shermolovich (2528338), Vadim M. Timoshenko (2528335), Yuriy M. Markitanov (2565598)   +2 more
core   +1 more source

Synthesis of Adenine Nucleosides with a Reactive (β-Iodovinyl)sulfone or (β-Keto)sulfone Group at the C2 Position and Their Polymerase-Catalyzed Incorporation into DNA

Molecules
Iodosulfonylation of an ethynyl group at the C2 position of 2′-deoxyadenosine or adenosine with TsI provides (E)-2-(β-iodovinyl)sulfones. The latter undergo nucleophilic substitution with amines via an addition–elimination to give β-sulfonylvinylamines ...
A. Hasan Howlader, Richard Fernandez, Pawlos S. Tsegay, Yuan Liu, Stanislaw F. Wnuk   +4 more
doaj   +1 more source

α-Nitro sulfones and derivatives. Chemnistry and spectroscopy

, 1975
The work described in this thesis originates from our intrest in sulfones with strongly electronegative α-substutuents, in casu α-nitro sulfones (R1SO2CR2R3NO2). ....
Zeilstra, Jacobus Johannes,
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Manganese-catalyzed cyclopropanation of allylic alcohols with sulfones

Nature Communications
Cyclopropanes are among the most important structural units in natural products, pharmaceuticals, and agrochemicals. Herein, we report a manganese-catalyzed cyclopropanation of allylic alcohols with sulfones as carbene alternative precursors via a ...
Ke Yu, Qin Nie, Qianjin Chen, Weiping Liu   +3 more
doaj   +1 more source

Zinc Promoted Cross‐Electrophile Sulfonylation to Access Alkyl–Alkyl Sulfones

Advanced Science
The transition metal‐catalyzed multi‐component cross‐electrophile sulfonylation, which incorporates SO2 as a linker within organic frameworks, has proven to be a powerful, efficient, and cost‐effective means of synthesizing challenging alkyl–alkyl ...
Zhuochen Wang, Rui Ma, Chang Gu, Xiaoqian He, Haiwei Shi, Ruopeng Bai, Renyi Shi   +6 more
doaj   +1 more source

Atropisomerism in biaryl sulfides and sulfones

, 2009
The thesis describes research carried out on the synthesis and asymmetric synthesis of atropisomeric biaryl sulfides and sulfones. Chapter one describes synthetic strategies employed in the synthesis of biaryl sulfides and sulfones.
Senior, James Daniel
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Arylselenovinyl sulfones: II. Addition of benzeneselenols to aryl ethynyl sulfones

, 2020
Depending on the solvent nature, addition of benzeneselenols to aryl ethynyl sulfones leads to formation of a mixture of (E)- and (Z)-1-arylseleno-2-arylsulfonylethenes and 1-arylseleno-1-arylsulfonylethenes (in carbon tetrachloride and cyclohexane) or ...
Berdnikov E., Mannafov T.
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