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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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Iron-catalyzed carboazidation of alkenes and alkynes
Nature Communications, 2019 Carboazidation of alkenes and alkynes holds the promise to construct valuable, functionalized molecules. Here, the authors report a general and efficient iron-catalyzed carboazidation of both alkenes and alkynes enabled by t-butyl perbenzoate.
Haigen Xiong +7 more
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Nature Communications, 2018 Converting alkynes into alkenes with high stereoselectivity via two consecutive C-C bond forming steps is a desirable process, yet very challenging. Here, the authors describe a dual photoredox-nickel catalytic system for the regio- and syn-selective ...
Lei Guo +4 more
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ACS Catalysis, 2021 : Catalytic functionalization of alkynes with organo-boron reagents provides a straightforward access to stereochemi-cally de fi ned multisubstituted alkenes, which are structural motifs commonly found in bioactive compounds and organic materials.
Javier Corpas +3 more
semanticscholar +1 more source
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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Mechanism, reactivity, and selectivity of nickel-catalyzed [4 + 4 + 2] cycloadditions of dienes and alkynes. [PDF]
, 2014 Density functional theory (DFT) calculations with B3LYP and M06 functionals elucidated the reactivities of alkynes and Z/E selectivity of cyclodecatriene products in the Ni-catalyzed [4 + 4 + 2] cycloadditions of dienes and alkynes.
Baran, Phil S +4 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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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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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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Isoprene oxidation by the gram-negative model bacterium variovorax sp. WS11 [PDF]
, 2020 Plant-produced isoprene (2-methyl-1,3-butadiene) represents a significant portion of global volatile organic compound production, equaled only by methane.
Crombie, Andrew T. +4 more
core +1 more source