Results 221 to 230 of about 42,123 (288)

Recent Breakthroughs in Cyclizations of <i>Ortho</i>-Quinone Methides. [PDF]

Molecules
Wang D, Guo J, Tan L, Qiu L, Reddy CVS, Xia W.   +5 more
europepmc   +1 more source

Ordered Ionic‐Liquid Channels Enable Fast Anhydrous Proton Conduction at up to 240°C for Fuel Cells

Angewandte Chemie, EarlyView.
Infiltration of ionic liquids into a composite scaffold comprised of graphene and boron nitride nanosheets functionalised with positively charged polyethyleneimine produces robust proton conducting membranes for the intermediate temperature electrochemical devices.
Mazin Al‐Alawi, Kaiqiang He, Mattia Belotti, Fanmengjing Wang, Jiffin Oommen, Douglas R. MacFarlane, Hoang‐Long Du, Alexandr N. Simonov, Huanting Wang   +8 more
wiley   +1 more source

Simulated Body Fluids for Dental Implant Corrosion: A Practical Guide. [PDF]

Dent J (Basel)
Bordbar-Khiabani A.
europepmc   +1 more source

Enantioselective Synthesis of Axially Chiral Diaryl Ethers via Rhodium‐Catalyzed [2 + 2 + 2] Cycloaddition

Angewandte Chemie, EarlyView.
An enantioselective rhodium‐catalyzed [2 + 2 + 2] cycloaddition enables the synthesis of axially chiral diaryl ethers. Carbonyl coordination ensures high reactivity and regioselectivity, affording products bearing up to four stereogenic axes with good enantio‐ and diastereoselectivity.
Yu Sato, Julong Jiang, Kairi Yamashiro, Ken Tanaka   +3 more
wiley   +1 more source

Bond strength of orthodontic brackets to CAD/CAM ceramics following various surface treatments. [PDF]

Clin Oral Investig
Colak G, Albayrak E, Ugurlu M.
europepmc   +1 more source

Catalytic Functionalization of Unactivated π‐Bonds Enabled by Bidentate Directing Auxiliaries

Angewandte Chemie, EarlyView.
This review explores how bidentate directing auxiliaries have advanced transition‐metal catalysis for unactivated alkene/alkyne functionalization. By leveraging chelated intermediates, bidentate directing auxiliaries enable precise hydrofunctionalization, difunctionalization, and C─H activation of π‐bonds with unique selectivity and reactivity.
Seunghyeon Cho, Al Vicente Riano D. Lisboa, Juntao Sun, Taeho Kang, Keary M. Engle   +4 more
wiley   +1 more source

Real-time P[Formula: see text]O[Formula: see text] quantification in industrial phosphoric acid using laser-induced breakdown spectroscopy: a paradigm shift in process analytical chemistry. [PDF]

Sci Rep
El Kohen M, El Asri M, El Idrissi H, Mounaam A, Griguer H, El Alami R.   +5 more
europepmc   +1 more source

Substrate‐Controlled Enantiodivergence in Ni‐Catalyzed Access to Phosphorylated Oxindoles With Quaternary Stereocenters

Angewandte Chemie, EarlyView.
An efficient, enantiodivergent synthesis of phosphorylated oxindoles with quaternary stereocenters is achieved via a nickel‐catalyzed intermolecular Heck‐phosphorylation cascade. Employing a single chiral catalyst, either product enantiomer is selectively accessed simply by changing the alkene leaving group. DFT calculations trace this stereodivergence
Haimeng Zhu, Lewen Wang, Shihui Luo, Xinglong Zhang, Jun (Joelle) Wang   +4 more
wiley   +1 more source

Catalytic Enantioselective Elimination of Cyclobutanols. [PDF]

J Am Chem Soc
Kumar P, Díaz-Salazar H, Iagarmina A, Woźniak Ł.   +3 more
europepmc   +1 more source

Catalytic Enantioselective Intramolecular Aza‐Michael Addition to α,β‐Unsaturated Esters

Angewandte Chemie, EarlyView.
A general method for accessing enantioenriched saturated N‐heterocycles via a catalytic enantioselective intramolecular aza‐Michael reaction to α,β‐unsaturated esters is described. A superbasic bifunctional iminophosphorane (BIMP) catalyst was key to enabling reactivity of the high pKa sulfonamide pronucleophile, whilst delivering good to excellent ...
Evan G. W. Rutter, Cameron J. MacRae, Haoran Xiong, Daniel Rozsar, Katherine F. P. Clarke, Darren J. Dixon   +5 more
wiley   +1 more source