Results 271 to 280 of about 2,751,852 (326)

Ruthenium‐Catalyzed Azide‐Selenoalkyne Cycloadditions: A Combined Synthetic–Computational Study into Reaction Scope, Mechanism, and Origins of Regioselectivity

Advanced Synthesis &Catalysis, EarlyView.
A ruthenium‐catalyzed azide–alkyne cycloaddition (RuAAC) reaction is reported for the synthesis of selenium‐substituted triazole products. Reaction regioselectivity is dependent on the identity of the non‐selenium substituent of the alkyne, which challenges the perceived understanding of RuAAC regioselectivity.
Frances E. Bugden, Andrew D. Bage, Ashima Bajaj, Bin Wang, Fiona J. Gibson, Henry Stone, Yingjian Xu, Frank De Proft, Mercedes Alonso, Mark D. Greenhalgh   +9 more
wiley   +1 more source

Experimental study and geochemical modeling of the effect of asphaltene during smart water flooding in carbonate reservoirs. [PDF]

Sci Rep
Ghorbani-Bavariani M, Rezaei A, Ahmadi M, Vatanparast H, Hemmati-Sarapardeh A.   +4 more
europepmc   +1 more source

Chiral Potassium Brønsted Base‐Catalyzed Stereoselective Synthesis of 1,3‐Diols via a Tandem Allylic Isomerization/Asymmetric Aldol–Tishchenko Reaction

Advanced Synthesis &Catalysis, EarlyView.
Chiral potassium base catalysts featuring 1,1´‐bi‐2‐naphthol‐derived chiral crown ethers as ligands promote a tandem allylic isomerization/asymmetric aldol‐Tishchenko reaction of allylic alcohols and aldehydes. This method provides enantioenriched 1,3‐diols with excellent diastereoselectivity and high enantioselectivity, thereby expanding the synthetic
Hiroki Ishikawa, Masahiro Sai
wiley   +1 more source

Correction: Formation permeability estimation using mud loss data by deep learning. [PDF]

Sci Rep
Abdollahfard Y, Mirabbasi SM, Ahmadi M, Hemmati-Sarapardeh A, Ashoorian S.   +4 more
europepmc   +1 more source

Proton‐Coupled Electron Transfer Processes in the Decarboxylative Synthesis of C‐4 Substituted Chroman‐2‐Ones

Advanced Synthesis &Catalysis, EarlyView.
This research presents a new mild photocatalytic method enables C‐4 alkylation of chroman‐2‐one derivatives with primary alkyl radicals. This radicals are generated via oxidative PCET process. Developed approach offers broad substrate scope, scalability under photo‐flow conditions, and mechanistic evidence supports a decarboxylation pathway under polar
Ewelina Kowalska, Benedetta Carli, José Alemán, Leyre Marzo, Anna Albrecht   +4 more
wiley   +1 more source

Nuclear track autoradiography for radon-related radiobiological hazards in Abu-Sannan Petroleum Area, Egypt. [PDF]

Sci Rep
Abdelrazk A, Ahmed H, El-Farrash A, Mitwalli M.   +3 more
europepmc   +1 more source

CEMPRI, a primary cementing software for vertical onshore wells as a tool for petroleum engineering education

Marcos Andrés Jiménez Moreno, José Roberto Hernández-Barajas, José del Carmen Jiménez‐Hernández, José Ramón Laines Canepa   +3 more
openalex   +1 more source

Electrochemical Trifluoromethylchlorosulfonylation of Alkenes via Copper‐Mediated SO2Cl Radical Transfer

Advanced Synthesis &Catalysis, EarlyView.
This article reports an electrosynthetic method for vicinal trifluoromethylchlorosulfonylation of alkenes using [Cu(MeCN)4]PF6 and triethylamine, without elaborate ligands. The reaction efficiently adds CF3 and SO2Cl across diverse unactivated alkenes with broad functional group tolerance.
Sachini Rodrigo, Melanie S. Sanford, Long Luo   +2 more
wiley   +1 more source

Performance and emission characteristics of waste cooking oil biodiesel blends in sustainable fuel applications. [PDF]

Sci Rep
Azarudeen JM, Anish M, Babu LG, Sivaram AR, Punitha N, Muniyappan K, Giri J, Kanan M, Jayaraman J, Baskar S.   +9 more
europepmc   +1 more source

One‐Step Copper‐Assisted Synthesis of α‐(Styrylsulfonyl)amides via SO2 Incorporation Under Visible Light

Advanced Synthesis &Catalysis, EarlyView.
α‐(Styrylsulfonyl)amides are prepared from α‐bromoamides, SO2, and styrenes in a one‐step photoredox‐catalyzed reaction in the presence of a copper complex. Additionally, related ester analogs could be synthesized following the same procedure. The mechanism of the newly developed method is investigated and model postmodification reactions are carried ...
Nejc Petek, Till Opatz
wiley   +1 more source