[reaction: see text] Treatment of diphenyl disulfide and terminal alkynes with gallium trichloride afforded (E)-1,2-diphenylthio-1-alkenes selectively (E/Z > 20/1). Alkenes also underwent this reaction to form trans adducts.
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http://dx.doi.org/10.1021/ol036391e | DOI Listing |
ACS Appl Electron Mater
August 2024
Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
Radiat Prot Dosimetry
July 2024
Department of Studies in Physics, Manasagangotri, University of Mysore, Mysuru 570006, India.
The effect of 60Co gamma irradiation on gallium oxide and titanium oxide (Ga2O3-TiO2) nanocomposites are investigated in the present study. The Ga2O3-TiO2 nanocomposite was synthesized by hydrothermal method at 120°C. The precursors for the synthesis consist of gallium nitrate anhydrous and titanium trichloride along with sodium hydroxide to achieve the pH of 9.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
October 2024
Universität Bielefeld, Fakultät für Chemie, Centrum für Molekulare Materialien, Universitätsstraße 25, 33615, Bielefeld, Germany.
Although the adduct of aluminum trichloride with thionyl chloride has been reported, no thionyl chloride adduct of a main group element Lewis acid or organometallic compound has been structurally characterized. In this communication we present the synthesis and reactivity of the structurally ascertained adduct of thionyl chloride with tris(pentafluoroethyl)gallane as a representative of a main group element Lewis acid. Gallium and indium compounds with electron withdrawing groups, e.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2024
Russian Academy of Sciences, N. D. Zelinsky Institute of Organic Chemistry, 47 Leninsky prosp., 119991, Moscow, Russian Federation.
The design of various cycloaddition/annulation processes is one of the most intriguing challenges in the development of donor-acceptor (D-A) cyclopropane chemistry. In this work, a new class of formal high-order [6+n]-cycloaddition and annulation processes of D-A cyclopropanes with cycloheptatriene systems has been designed and reported, to fill a significant gap in the chemistry of D-A cyclopropanes. The reactivity of methylated cycloheptatrienes from Me1 to Me5 as well as unsubstituted cycloheptatriene was studied in detail under GaCl activation conditions, which makes it possible to efficiently generate gallium 1,2-zwitterionic complexes or 1,3-zwitterionic intermediates starting from D-A cyclopropanes, while other Lewis acids are ineffective and non-selective.
View Article and Find Full Text PDFInorg Chem
April 2024
Laboratoire de Physico-Chimie de l'Atmosphère, Université du Littoral Côte d'Opale, 59140 Dunkerque, France.
Oxidative recycling of metals is crucial for a circular economy, encompassing the preservation of natural resources, the reduction of energy consumption, and the mitigation of environmental impacts and greenhouse gas emissions associated with traditional mining and processing. Low-melting gallium trichloride appears to be a promising oxidative solvent for rare-earth metals, transuranium elements, platinum, pnictogens, and chalcogens. Typically, oxidative dissolution with GaCl occurs at relatively low temperatures over a few days, assuming the presence of tetrahedral Ga-Cl entities.
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