Results 31 to 40 of about 887 (144)

Multigramme synthesis and asymmetric dihydroxylation of a 4-fluorobut-2E-enoate

Beilstein Journal of Organic Chemistry, 2013
Esters of crotonic acid were brominated on a multigramme scale using a free radical procedure. A phase transfer catalysed fluorination transformed these species to the 4-fluorobut-2E-enoates reproducibly and at scale (48–53%, ca. 300 mmol).
James A. B. Laurenson, John A. Parkinson, Jonathan M. Percy, Giuseppe Rinaudo, Ricard Roig   +4 more
doaj   +1 more source

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

Organocatalytic asymmetric fluorination of α-chloroaldehydes involving kinetic resolution

Beilstein Journal of Organic Chemistry, 2014
In a previous study it was shown that the enantioselective α-fluorination of racemic α-chloroaldehydes with a chiral organocatalyst yielded the corresponding α-chloro-α-fluoroaldehydes with high enantioselectivity.
Kazutaka Shibatomi, Takuya Okimi, Yoshiyuki Abe, Akira Narayama, Nami Nakamura, Seiji Iwasa   +5 more
doaj   +1 more source

Nickel‐Catalyzed Reductive Cross‐Coupling of Xanthate Esters With Aryl and Alkenyl Iodides

Chemistry – A European Journal, EarlyView.
A nickel‐catalyzed reductive cross‐coupling of xanthate esters and aryl/alkenyl iodides is reported without the need for separate activators for the xanthate esters. The reaction utilizes a relatively low catalyst loading. Diarylmethanes with a good functional group variety can thus be synthesized indirectly from the corresponding benzylic alcohols ...
Felix Vöhringer, Kathrin Zwettler, Dmitry I. Sharapa, Felix Studt, Ivana Fleischer   +4 more
wiley   +1 more source

Deoxygenative gem-difluoroolefination of carbonyl compounds with (chlorodifluoromethyl)trimethylsilane and triphenylphosphine

Beilstein Journal of Organic Chemistry, 2014
Background: 1,1-Difluoroalkenes cannot only be used as valuable precursors for organic synthesis, but also act as bioisosteres for enzyme inhibitors. Among various methods for their preparation, the carbonyl olefination with difluoromethylene phosphonium
Fei Wang, Lingchun Li, Chuanfa Ni, Jinbo Hu   +3 more
doaj   +1 more source

Investigation of Electro‐Oxidation and Ozonation for Removal of Organics in Wastewater Derived From Recycling Process for Lithium‐Ion Batteries

CleanMat, EarlyView.
To develop recycling processes for lithium‐ion batteries, wastewater treatment for the removal of organic compounds originating from the electrolyte was investigated using electro‐oxidation and ozonation. Based on the results, this paper proposes a process which combines these two methods to remove alcohols derived from the solvent and additives ...
Takumi Yasuda, Tetsuya Uda
wiley   +1 more source

A novel family of (1-aminoalkyl)(trifluoromethyl)- and -(difluoromethyl)phosphinic acids – analogues of α-amino acids

Beilstein Journal of Organic Chemistry, 2014
A series of novel (1-aminoalkyl)(trifluoromethyl)- and -(difluoromethyl)phosphinic acids – analogues of proteinogenic and nonproteinogenic α-amino acids were prepared.
Natalia V. Pavlenko, Tatiana I. Oos, Yurii L. Yagupolskii, Igor I. Gerus, Uwe Doeller, Lothar Willms   +5 more
doaj   +1 more source

The Diarylprolinol Silyl Ethers: After 20 Years Still Opening New Doors in Asymmetric Catalysis

Angewandte Chemie, Volume 138, Issue 11, 9 March 2026.
Catalysis Rules! The year 2025 marks the 20th anniversary of diarylprolinol silyl ethers in asymmetric organocatalysis. During the first decade after their discovery, these catalysts have been established as one of the most versatile tools in aminocatalysis. Although now considered mature, recent years have witnessed renewed innovation.
Enrico Marcantonio, René Slot Bitsch, Karl Anker Jørgensen   +2 more
wiley   +2 more sources

1-((Dimethyl(3-((2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctyl)oxy)propyl)silyl)oxy)-3,5,7,9,11,13,15-heptakis((dimethylsilyl)oxy)-octasilsesquioxane

Molbank
The title compound was synthesized using Pt-catalyzed hydrosilylation of octasilane POSS and allyl 1H,1H-perfluorooctyl ether. The purity and structure were determined by NMR (1H, 13C, 19F, 29Si), and MALDI TOF-MS.
Analise C. H. Migliaccio, Andrea R. Kelley, Scott T. Iacono   +2 more
doaj   +1 more source

Organo-Fluorine Compounds as Artificial Blood Substitute

Defence Science Journal, 1980
The rate of fluoro-carbon compounds as artificial substitute for blood has been discussed. Blood is a complicated body fluid. At first glance it seems impossible that such a complicated body fluid can be replaced by artificial synthesized fluids or any substitute for this can be synthesized.
openaire   +1 more source