Results 291 to 300 of about 5,593,157 (380)

Photoredox‐Catalyzed Synthesis of a Novel Class of Fluoroalkyl Pyrazolones

Advanced Synthesis &Catalysis, EarlyView.
A photoredox strategy enables regioselective synthesis of fluoroalkyl 2‐pyrazolin‐5‐ones via radical addition and cyclization. This mild, metal‐free method shows a broad substrate scope, operates in batch and flow systems, and offers a sustainable approach to fluorinated heterocycles with potential applications in medicinal chemistry.
Emanuele F. Pissinati, Meysam Azizzade, Till Opatz, Márcio W. Paixão   +3 more
wiley   +1 more source

Pd-Catalyzed Cross-Coupling of Alkylbisboronic Esters. [PDF]

ChemistryOpen
Scott PP, Baird CE, Kraichely EA, Radeke LM, Barker TJ.   +4 more
europepmc   +1 more source

Additives of Petroleum Products

Journal of Japan Oil Chemists' Society, 1982
openaire   +3 more sources

Visible‐Light Photocatalyzed Selective Synthesis of 1,2‐ or 1,3‐Dithianes From Thietanes: An Experimental and Theoretical Study

Advanced Synthesis &Catalysis, EarlyView.
Although this article formally presents a regioselective photochemical ring enlargement of thietanes into 1,2‐ or 1,3‐dithianes, time‐dependent density functional theory calculations have revealed that 1,3‐dithianes are in fact formed thought photoinduced hydrogen atom transfers from 1,2‐dithianes initially resulting from the ring enlargement using ...
Gabriel Cormier, Manuel Pedrón, Maria I. Lapuh, Regis Guillot, Ilaria Ciofini, Thomas Boddaert   +5 more
wiley   +1 more source

Progress in biostimulation-based remediation of TPH-contaminated soils: a comprehensive review. [PDF]

PeerJ
Li Y, Yang J, Song Y, Wei M.
europepmc   +1 more source

Installation of Trifluoromethylated Quaternary Carbon Stereocenters via Asymmetric Epoxidation of Tetrasubstituted Alkenes

Advanced Synthesis &Catalysis, EarlyView.
The catalytic enantioselective epoxidation of acyclic tetrasubstituted alkenes, bearing a trifluoromethyl group, is reported. In the presence of Takemoto's thiourea organocatalyst and tert‐butyl hydroperoxide, epoxides are obtained with excellent yield and good to high enantioselectivity.
Vincenzo Battaglia, Isaac G. Sonsona, Andrea Pellegrini, Andrea Mazzanti, Alessandra Lattanzi   +4 more
wiley   +1 more source

Isochromene and Dihydroisobenzofuran Electrosynthesis by a Highly Regiodivergent Cyclization of 2-Ethynylbenzaldehydes. [PDF]

J Org Chem
Martins GM, Simoso GB, de Castro PP, de Lucca F, Mendes SR, Brocksom TJ, de Oliveira KT.   +6 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

Petroleum coke-derived graphene as a low-cost electrode material for efficient perovskite solar cells. [PDF]

Nanoscale Adv
Alkhatani M, Almutairi MM, Alalwan MH, Algharash HK, Aldossary RA, Alzahrani YA, Alenzi S, Almalki IS, Yafi GS, Alessa AM, Alghannam FS, Aljuwayr A, Al-Saleem NK, Alanazi A, Almalki M.   +14 more
europepmc   +1 more source

Petroleum Production in 1959

Bulletin of The Japan Petroleum Institute, 1960
openaire   +3 more sources