Results 171 to 180 of about 928,256 (295)

Difluoromethylenation of Alkynes: Streamlined Access to Allyl Difluorides

Angewandte Chemie, EarlyView.
Stabilizing primary oxocarbenium in HF/pyridine unlocks a direct alkyne difluoromethylenation – an efficient route to synthetically‐relevant allyl difluorides in a single step. ABSTRACT A direct difluoromethylenation of alkynes has been developed using HF/pyridine as a dual acidic and fluorinating medium. The reaction proceeds via in situ generation of
Fabien Naullet, Sourav Mondal, Frédéric Guégan, Bastien Michelet, Sébastien Thibaudeau   +4 more
wiley   +2 more sources

Cobalt‐Catalyzed [2σ+2π] Cycloaddition via Site‐Selective Capture of Bicyclobutane Diradical

Angewandte Chemie, EarlyView.
We report a Co(II)‐catalyzed strategy that combines thermal activation of bicyclo[1.1.0]butane (BCBs) with site‐selective radical capture to furnish head‐to‐head fused bicyclo[2.1.1]hexanes via [2σ+2π] cycloaddition with indoles. Detailed mechanistic studies (31P NMR, EPR, CV, and DFT) support the catalytic pathway, while phosphine‐oxide trapping and X‐
Tanmayee Nanda, Alexander Umanzor, Julia Gartzke, Jeremy T. Maddigan‐Wyatt, Philipp Thielert, Stefan Weber, Sabine Richert, Shuming Chen, Daniel B. Werz   +8 more
wiley   +2 more sources

Role of sodium hypochlorite and ethyl alcohol and mechanical cleaning aid in cleaning used healing abutments: A cross-sectional study. [PDF]

J Indian Prosthodont Soc
Thakur A, Anant M, Gupta DK, Jha A, Sethi S, Patel G.   +5 more
europepmc   +1 more source

Chiroptical Switching by Stereoselective Photochemical Sigmatropic Rearrangements: Experimental Realization of Calderoselectivity

Angewandte Chemie, EarlyView.
Calderoselectivity is established as a stereochemical principle for sigmatropic rearrangements. A homoannulene‐based chiroptical photoswitch undergoes a photochemical [1,11] sigmatropic rearrangement with control of the acyl movement on top of the cyclic π system.
Anne Krenkel, Frederike Beyer, Malte Feßner, Trung Tran Ngoc, Tobias Rüffer, Dominik Hornig, Martin Breugst, Christian Merten, Johannes F. Teichert   +8 more
wiley   +2 more sources

Rheological Properties of Emulsions Stabilized by Cellulose Derivatives with the Addition of Ethyl Alcohol. [PDF]

Materials (Basel)
Różańska S, Różański J, Wagner P, Warmbier-Wytykowska E.   +3 more
europepmc   +1 more source

Biomechanical and Microbiological Analysis of Canine Cadavers Fixed With Ethyl Alcohol Formaldehyde Mixtures for Anatomy and Surgery Education. [PDF]

Anat Histol Embryol
Alves SS, Queiroz ABPS, Brandão NT, Ferreira GC, Zero RC, Oliveira FS.   +5 more
europepmc   +1 more source

New Methodology for Modifying Sodium Montmorillonite Using DMSO and Ethyl Alcohol. [PDF]

Materials (Basel)
Stoski A, Machado BR, Vilsinski BH, Carvalho LMG, Muniz EC, Almeida CAP.   +5 more
europepmc   +1 more source

Treatment of Ethylene Glycol Poisoning with Oral Ethyl Alcohol. [PDF]

Case Rep Med, 2019
Achappa B, Madi D, Kanchan T, Kishanlal NK.   +3 more
europepmc   +1 more source

Determination of a robust headspace GC-MS/MS method for analysis of ethyl alcohol and acetaldehyde: clinical application to pharmacokinetics study. [PDF]

Transl Clin Pharmacol
Oh HA, Park MK.
europepmc   +1 more source

Activity of exoglycosidases in blood, urine, cerebrospinal fluid, and vitreous humor in individuals who died from ethyl alcohol poisoning. [PDF]

Sci Rep
Ptaszyńska-Sarosiek I, Kułak-Bejda A, Niemcunowicz-Janica A, Waszkiewicz N, Cwalina U, Nesterowicz M, Stasiūnienė J, Szajda SD, Chojnowska S, Szeremeta M.   +9 more
europepmc   +1 more source