Results 71 to 80 of about 45,374 (213)

1,1-Diphenyl-4-(thiophen-2-yl)but-3-yn-1-ol

IUCrData, 2018
The asymmetric unit of the title homopropargyl alcohol, C20H16OS, contains two independent molecules comprising a hydroxy group, a 3-(2-thiophenyl)propargylic moiety and two aromatic rings linked to a central carbon atom.
Christian A. Umaña, Leslie W. Pineda, Jorge A. Cabezas   +2 more
doaj   +1 more source

INDIUM-PROMOTED ALLYLATION OF ALKYNES WITH ALLYLIC ALCOHOLS: HIGHLY REGIOSELECTIVE SYNTHESIS OF HALOGEN-SUBSTITUTED 1,4-DIENES

, 2013
Indium-promoted allylation of alkynes by direct use of allyl alcohols as the allylating agents has been developed under mild conditions, in which a wide range of allylic alcohols and alkynes (both aromatic and aliphatic alkynes) could be tolerated, and ...
Yue, Hui-Lan, Ma, Lei, Ji, Jian-Xin, Ma, L (reprint author), State Food & Drug Adm, Ctr Drug Evaluat, Beijing 100038, Peoples R China   +3 more
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Electrocatalytic regio- and stereoselective carboxylation of terminal alkynes with CO2

Green Synthesis and Catalysis
Carboxylation with CO2 is a practical and streamlined way to construct a variety of sophisticated carboxylic acids and their derivatives. However, a series of elegant methods focus mainly on C(sp3)– and C(sp2)– carboxylation and involve transition-metal ...
Pan Zhou, Haoran Jiao, Yue Jing, Kaikai Niu, Hongjian Song, Yuxiu Liu, Qingmin Wang   +6 more
doaj   +1 more source

[2+2+2] Annulation of N-(1-Naphthyl)acetamide with Two Alkynoates via Cleavage of Adjacent C–H and C–N Bonds Catalyzed by an Electron-Deficient Rhodium(III) Complex

Molecules, 2018
It has been established that an electron-deficient cationic CpE-rhodium(III) complex catalyzes the non-oxidative [2+2+2] annulation of N-(1-naphthyl)acetamide with two alkynoates via cleavage of the adjacent C⁻H and C⁻N bonds to give densely ...
Jyunichi Terasawa, Yu Shibata, Miho Fukui, Ken Tanaka   +3 more
doaj   +1 more source

Siloxy alkynes in annulation reactions

, 2014
Siloxy alkynes are a family of versatile species in organic synthesis. This account reviews the annulation reactions of siloxy alkynes for the synthesis of a variety of carbo- and heterocyclic products.
Sun, Jianwei, Zhao, Wanxiang, Qian, Hui
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Iron-catalysed hydrofunctionalisation of alkenes and alkynes [PDF]

, 2015
The iron-catalysed hydrofunctionalisation of alkenes and alkynes has been developed to give a range of functionalised products with control of regio-, chemo- and stereochemistry.
Greenhalgh, Mark David
core   +1 more source

‐Alkynes and Further Functionalizations.

, 2023
International audienceHerein is described a fully regio-and stereoselective hydroelementation reaction of SF5-alkynes with N, O and Snucleophiles and further functionalization of the corresponding Z-(hetero)vinyl-SF5 intermediates, a suitable platform to
Blanchard, Nicolas, Lucas Popek, Vincent Debrauwer, Karinne Miqueu, Miqueu, Karinne, Debrauwer, Vincent, Vincent Bizet, Jorge Juan Cabrera‐Trujillo, Nicolas Blanchard, Bizet, Vincent, Popek, Lucas, Cabrera-Trujillo, Jorge   +11 more
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alkynes

, 2008
Citation: 'alkynes' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.A00236 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial usage
openaire   +1 more source

Metallaphotoredox-catalyzed alkynylcarboxylation of alkenes with CO2 and alkynes for expedient access to β-alkynyl acids

Nature Communications
Carboxylation with CO2 offers an attractive and sustainable access to valuable carboxylic acids. Among these methods, direct C−H carboxylation of terminal alkynes with CO2 has attracted much attention for one-carbon homologation of alkynes, enabling ...
Jin-Cheng Xu, Jun-Ping Yue, Min Pan, Yi-Chi Chen, Wei Wang, Xi Zhou, Wei Zhang, Jian-Heng Ye, Da-Gang Yu   +8 more
doaj   +1 more source

Mechanistic studies on palladium(II) catalyzed hydroarylation of alkynes

, 2018
The hydroarylation of alkynes is a very valuable C-C bond formation reaction used to synthesize aryl alkene compounds by direct addition of arene to the C-C triple bond.
Damera, Ravi Teja
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