Results 51 to 60 of about 4,572 (262)

Organocatalytic Enantioselective Henry Reactions [PDF]

, 2011
This is an open access article distributed under the Creative Commons Attribution License.A large number of interesting organocatalytic enantioselective protocols have been explored and successfully applied in the last decade.
Herrera, Raquel P., Marqués-López, Eugenia, Álvarez-Casao, Yolanda   +2 more
core   +2 more sources

5-Formyltriazoles as Valuable Starting Materials for Unsymmetrically Substituted Bi-1,2,3-Triazoles

Frontiers in Chemistry, 2020
Herein, we present the first synthetic methodologies toward non-symmetrical 5,5′-C, C-linked bi-1,2,3-triazoles starting from 5-formyl-1,2,3-triazole via two related pathways.
Robby Vroemans, Tomas Horsten, Maarten Van Espen, Wim Dehaen   +3 more
doaj   +1 more source

Stereoselective Glycosylation of 2-Nitrogalactals Catalyzed by a Bifunctional Organocatalyst [PDF]

, 2016
The use of a bifunctional cinchona/thiourea organocatalyst for the direct and α-stereoselective glycosylation of 2-nitrogalactals is demonstrated for the first time.
Balmond, Edward, Coe, Diane M, Crisenza, Giacomo, Galan, Carmen, Harper, Matt, McGarrigle, Eoghan M., Medina Villar, Sandra, Miranda Alcazar, Silvia   +7 more
core   +2 more sources

Nitroalkene fatty acids modulate bile acid metabolism and lung function in obese asthma

Scientific Reports, 2021
Bile acid profiles are altered in obese individuals with asthma. Thus, we sought to better understand how obesity-related systemic changes contribute to lung pathophysiology.
Michelle L. Manni, Victoria A. Heinrich, Gregory J. Buchan, James P. O’Brien, Crystal Uvalle, Veronika Cechova, Adolf Koudelka, Dharti Ukani, Mohamad Rawas-Qalaji, Tim D. Oury, Renee Hart, Madeline Ellgass, Steven J. Mullett, Merritt L. Fajt, Sally E. Wenzel, Fernando Holguin, Bruce A. Freeman, Stacy G. Wendell   +17 more
doaj   +1 more source

Efficient preparation of TMSCCl2Br and its use in dichlorocyclopropanation of electron deficient alkenes [PDF]

, 2016
The reaction of excess TMSCl and LiCCl2Br at low temperature is a technically simple high yield route to TMSCCl2Br. The latter is a stable source of the dichlorobromomethide carbanion, which undergoes 1,4-addition with cyclic nitroalkenes and (E ...
Burroughs, Laurence, Durán-Peña, Maria Jesus, Lee, Darren S., Woodward, Simon   +3 more
core   +1 more source

Design and Synthesis of Lactose‐Derived Ligands and Their Application in Asymmetric Friedel–Crafts Alkylation

European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
This work describes the synthesis of lactose‐ and glucose‐derived chiral ligands and their application in the catalytic enantioselective Friedel–Crafts alkylation of indole with a series of trans‐β‐nitrostyrenes. The optimal ligand was an acetate protected, lactose‐derived pyridyl imine and its zinc complex afforded ees up to 93% and yields up to 93 ...
Sandra Bulawa, Julia Bruno‐Colmenarez, Patrick J. Guiry   +2 more
wiley   +1 more source

Nitro Fatty Acids (NO₂-FAs): An Emerging Class of Bioactive Fatty Acids

Molecules, 2021
Unsaturated nitro fatty acids (NO2-FAs) constitute a category of molecules that may be formed endogenously by the reaction of unsaturated fatty acids (UFAs) with secondary species of nitrogen monoxide and nitrite anions.
Giorgos S. Koutoulogenis, George Kokotos
doaj   +1 more source

1,4-Bromoboration of nitroalkenes

Chemical Communications
The selective 1,4-bromoboration of nitroalkenes occurs under mild conditions with a bromoborane featuring two 1-methyl- ortho -carborane substituents, BrB Me o Cb 2 .
Kanika Vashisth, Caleb D. Martin
openaire   +1 more source

Phase‐Transfer‐Catalyzed Interrupted Barton–Zard Reaction Between Electron‐Deficient Indoles and Benzophenone‐Derived Isocyanides

European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević, Ines Bašić, Mateja Matišić, Josip Rešetar, Matija Gredičak   +4 more
wiley   +1 more source

Phosphoramidite-Cu(OTf)2 complexes as chiral catalysts for 1,3-dipolar cycloaddition of iminoesters and nitroalkenes [PDF]

, 2013
Chiral complexes formed by phosphoramidites such as (Sa,R,R)-9 and Cu(OTf)2 are excellent catalysts for the general 1,3-dipolar cycloaddition between azomethine ylides and nitroalkenes affording the corresponding tetrasubstituted proline esters mainly as
Castelló Moncayo, Luis Miguel, Cossío Mora, Fernando Pedro, Cózar Ruano, Abel de, Larrañaga Agirre, Olatz, Nájera, Carmen, Sansano, Jose M.   +5 more
core   +2 more sources