Results 91 to 100 of about 3,998 (209)
Formal [4 + 2] cycloaddition of alkoxy-substituted donor-acceptor cyclobutanes and aldehydes catalyzed by Yb(OTf)3. [PDF]
, 2010 The cycloaddition between 2-alkoxy-1,1-cyclobutane diesters and aromatic, heteroaromatic, or aliphatic aldehydes under Yb(OTf)(3) catalysis generates tetrahydropyrans in high yields with exclusive cis ...
Machin, Ben P +3 more
core +3 more sources
Veterinary Ophthalmology, EarlyView.ABSTRACT Objective To investigate the antimicrobial effect of 275 nm wavelength ultraviolet C (UV‐C) light on M. bovis using an affordable, broadly available modified handheld device and to determine if photoreactivation plays a role in bacterial resistance to UV‐C. Methods UV‐C therapy (UVCT) was evaluated in vitro using triplicates of 3 M.
Bactelius Turicea +4 more
wiley +1 more source
1,3-Difunctionalization of [1.1.1]propellane through iron-hydride catalyzed hydropyridylation
Nature CommunicationsCurrent methodologies for the functionalization of [1.1.1]propellane primarily focus on achieving 1, 3-difunctionalized bicyclo[1.1.1]pentane or ring-opened cyclobutane moiety. Herein, we report an innovative approach for the 1, 3-difunctionalization of [
Changha Kim, Yuhyun Kim, Sungwoo Hong
doaj +1 more source
Veterinary Ophthalmology, EarlyView.ABSTRACT Objective To assess if an inexpensive, commercially available ultraviolet C (UV‐C) light device with a peak emission of 275 nm can inhibit equine keratomycosis‐associated pathogens located at different corneal depths in an ex vivo model. Methods A controlled, randomized experimental design.
Mona Hoerdemann +3 more
wiley +1 more source
, 1990 Organic molecules and materials with large numbers of unpaired spins promise to display novel combinations of magnetic, optical, and electrical properties.
Dougherty, Dennis A.
core
Analytical Science Advances, Volume 7, Issue 1, June 2026.ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela +7 more
wiley +1 more source
Asymmetric Negishi and Kumada Couplings
Advanced Synthesis &Catalysis, Volume 368, Issue 5, 3 March 2026.This review summarizes asymmetric Negishi and Kumada cross‐coupling reactions from the 1980s through 2025. It examines enantioselective and enantiospecific transformations catalyzed by nickel, palladium, and cobalt complexes , highlighting ligand design, mechanistic insights, and applications in constructing complex chiral molecules and natural ...
Rui‐Heng Wang, Aishun Ding, Ramon Rios
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 7, 9 February 2026.Ni: neue Lösung für asymmetrische C(sp3)‐H‐Aktivierung. Die stereoselektive Synthese vollständig kohlenstoffsubstituierter quartärer Stereozentren gelingt durch eine enantioselektive C(sp3)‐H‐Arylierung unter Verwendung eines Ni‐Katalysators auf der Basis eines BINOL‐Derivaten.
Erwan Brunard +4 more
wiley +1 more source
Transannular Claisen Rearrangements of α-Sulfonyl Lactones
, 2009 This thesis is divided into three sections. Section one is a review of transannular pericyclic reactions. It covers the four main types of pericyclic reaction and major contributions in the field to date.
Gore, Sophie, Gore, Sophie
core +1 more source
Angewandte Chemie, Volume 138, Issue 5, 28 January 2026.Strained spirocyclic spiro[2.3]hexane and its heteroatom‐containing derivatives, including previously underrepresented 5‐oxa‐1‐azaspiro[2.3]hexanes and 1,5‐diazaspiro[2.3]hexanes, were synthesized via a modular approach of insertion of cyclobutane‐, oxetane‐, and azetidine‐containing sulfonium reagents into alkenes, carbonyls and imines.
Philipp Natho +10 more
wiley +2 more sources