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Nickel/Photoredox-catalyzed diastereoselective semihydrogenation of alkynes using a carboxylic acid as a cooperative ligand and hydrogen surrogate [PDF]
Nature CommunicationsThe Z-selective semihydrogenation of alkynes plays a key role in the industrial manufacture of fine chemicals. Considerable research attention has focused on the development of reagents, catalysts, and protocols for stereoselective reduction of alkynes ...
Jiaqian Zhang +5 more
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Molecules, 2021 In the presence of Cs2CO3, the first simple, efficient, and one-pot procedure for the synthesis of 3,5-diaryl pyridines via a variety of aromatic terminal alkynes with benzamides as the nitrogen source in sulfolane is described. The formation of pyridine
Hina Mehmood +3 more
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Molecules, 2020 Borylated aryl alkynes have been synthesized via one-pot iridium catalyzed C–H borylation (CHB)/Sonogashira cross-coupling of aryl bromides. Direct borylation of aryl alkynes encountered problems related to the reactivity of the alkyne under CHB ...
Ghayoor A. Chotana +4 more
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Ti(O-iPr)4-EtMgBr-Catalyzed Reaction of Dialkyl-Substituted Alkynes with Et2Zn
Chemistry Proceedings, 2021 For the first time, the Ti(O-iPr)4-EtMgBr carbozincation of dialkyl-substituted alkynes with Et2Zn was carried out. It was found that the reaction of 1,2-disubstituted alkynes (5-decyne, 4-octyne, 3-hexyne) with Et2Zn is accompanied by the regioselective
Azat M. Gabdullin +4 more
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iScience, 2020 Summary: As a privileged motif, tetrazoles can be widely found in pharmaceuticals and materials science. Herein, a five-component reaction of cycloketone oxime esters, alkynes, DABCO·(SO2)2, and two molecules of trimethylsilyl azide under iron catalysis ...
Jun Zhang +3 more
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«STRUCTURE OF ALKYNES C2H2 — C9H16 HEAT OF VAPORIZATION» CORRELATION
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2014 To investigate the quantitative correlation «structure of 132 alkynes C2H2−C9H16 – property», topological indexes χ Randich and ∆i3 were used. Then using the two-parameter functions, quantitative correlation «structure of alkynes – property» are ...
V.V. Grebeshkov, V.M. Smolyakov
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Nature Communications, 2021 Alkynes are amongst the most valuable functional groups in organic chemistry, however, the preparation of alkyl-substituted alkynes still remains elusive. Here the authors show a nickel-catalyzed deaminative Sonogashira coupling of alkylpyridinium salts.
Xingjie Zhang +4 more
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Alkynes as Synthetic Equivalents of Ketones and Aldehydes: A Hidden Entry into Carbonyl Chemistry
Molecules, 2019 The high energy packed in alkyne functional group makes alkyne reactions highly thermodynamically favorable and generally irreversible. Furthermore, the presence of two orthogonal π-bonds that can be manipulated separately enables flexible synthetic ...
Igor V. Alabugin +4 more
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[3+2] Cycloaddition of alkyl aldehydes and alkynes enabled by photoinduced hydrogen atom transfer
Nature Communications, 2022 In contrast to the prevalence of 1,3-dipolar cycloadditions, radical [3+2] annulations of alkynes are underexplored. Here, the authors describe [3+2] cycloadditions of various internal alkynes with readily accessible aliphatic aldehydes via photoinduced ...
Siya Le +6 more
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Synthesis of aryl-1H-1,2,3-triazoles via 1,3-dipolar cycloaddition
Orbital: The Electronic Journal of Chemistry, 2012 A series of Aryl-1H-1,2,3-triazoles were prepared from the reaction between aril-azide (1) with 1.5 equiv. of terminal alkynes (2a-o). The reactions carried out at room temperature and in the presence of CuI (10 mol%) in acetonitrile. The compounds (3a-o)
Wagner O. Valença +2 more
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