Results 71 to 80 of about 4,414 (202)

Accessing Heterocycle‐Containing Borazine Frameworks via C−H Functionalization Reactions of Heterocycles

European Journal of Organic Chemistry, Volume 29, Issue 29, 7 August 2026.
A Pd/Cu cooperative catalytic system enables the direct C–H functionalization of a diverse range of five‐membered and benzo‐fused heterocycles with iodinated hexaarylborazines, providing efficient access to previously inaccessible heterocycle‐functionalized borazines.
Fan Huang, Giulia Brufani, Ejdi Cela, Alireza Nazari Khodadadi, Dario Marchionni, Luigi Vaccaro   +5 more
wiley   +1 more source

Three Component Thio‐ and Carboboration of Alkynes: A Modular Route to Functionalised Bicyclic Boronates

Angewandte Chemie, Volume 138, Issue 30, 20 July 2026.
Three‐component thio‐ and carbo‐boration reactions to form functionalised benzoxaborinines and benzazaborinines are reported. The nucleophile scope includes thioethers, thiols, and (hetero)arenes. Mechanistic studies revealed a disparity between thioboration using thioethers and using thiols.
Laura Winfrey, Gary S. Nichol, Stephen P. Thomas, Dominic R. Willcox, Michael. J. Ingleson   +4 more
wiley   +2 more sources

Synthesis of Acylbenzo[b]thiophenes, benzofurans and indoles via intramolecular oxidative cyclization enabled by photocatalytic hydrogen atom transfer (HAT)

Tetrahedron Chem
An efficient strategy for intramolecular oxidative cyclization of 2-alkynylthioanisoles toward 3-acylbenzo[b]thiophenes by photochemical hydrogen atom transfer catalysis has been developed.
Fen-Dou Wang, Jin Jiang, Tiantian Xu, Wen-Chao Yang, Shu-Peng Zhang, Min Wang, Pinhua Li   +6 more
doaj   +1 more source

Three-Component Coupling Reactions of Arynes for the Synthesis of Benzofurans and Coumarins

Molecules, 2014
The domino three-component coupling reaction of arynes with DMF and active methylenes or methines was studied as a highly efficient method for preparing heterocycles.
Eito Yoshioka, Shigeru Kohtani, Hideto Miyabe   +2 more
doaj   +1 more source

Pd‐Catalyzed Direct Access to 2‐Substituted (Aza)benzo[b]furans via Cascade Reactions Under “On‐Water” Conditions

Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.
An “on‐water” scalable Pd‐catalyzed heteroannulation delivers benzofurans and furopyridines at ultralow catalyst loadings (down to 0.005 mol%), providing products essentially free of palladium residues. In addition to a broad substrate scope (aryl, alkenyl, and alkyl alkynes with o‐iodophenols or 2‐iodo‐3‐hydroxypyridines), this protocol enables a new ...
Iratxe Astarloa, María Teresa Herrero, Garazi Urgoitia, Raul SanMartin   +3 more
wiley   +1 more source

Unlocking Stereodefined Olefins by Z‐Selective Transition Metals‐catalyzed C−H Activations

ChemCatChem, Volume 18, Issue 15, 14 August 2026.
The synthesis of Z‐olefins is an important challenge in synthetic organic chemistry. Within this review, we report a comprehensive overview of transition metals‐catalyzed Z‐selective C–H activations of (hetero)arenes for the synthesis of stereodefined olefins.
Francesco Capranica, Silvia Cattani, Gianpiero Cera   +2 more
wiley   +1 more source

Diastereoselective Copper‐Catalyzed Defluorosilylation of Pentafluoroethyl Alkenes to Access Polyfluorinated Allylsilanes

Chinese Journal of Chemistry, Volume 44, Issue 15, Page 2587-2592, 1 August 2026.
Under copper(I) catalysis, pentafluoroethylated alkenes can undergo smooth defluorosilylation to generate novel polyfluorinated products. The reaction exhibits high levels of diastereoselectivities for obtaining multisubstituted allylsilanes with control of the double bond geometry.
Yuwei Zong, Yihan Tang, Gavin Chit Tsui
wiley   +1 more source

Mechanochemistry as an Emerging Tool for Organofluorine Chemistry

Chemistry–Methods, Volume 6, Issue 8, August 2026.
Fluorinated scaffolds are central across many areas of chemistry, driving the demand for efficient and sustainable synthetic methods. Mechanochemistry has emerged as a powerful alternative to conventional approaches, offering reduced environmental impact, shorter reaction times, and unique reactivity and selectivity.
Marie Caldiero, Nicolas Delcroix, Vitalii Solomin, Thomas Castanheiro   +3 more
wiley   +1 more source

Revised Formal Total Synthesis of Dehydro-δ-Viniferin and Anigopreissin A

Organics
This work presents a revised total synthesis of two pharmacologically relevant benzofurans using newly developed environmentally friendly methodologies.
Alessandro Santarsiere, Marianna Volgare, Lucia Chiummiento   +2 more
doaj   +1 more source

Titanium-induced synthesis of benzofurans

Bulletin of the Chemical Society of Ethiopia, 2011
Ketoesters derived from the acylation of o-hydroxyacetophenone with aliphatic as well as aromatic acid chlorides undergo intramolecular cyclization in the presence of low-valent titanium to afford benzofurans in good yields.
N.D. Jumbam, M.P.I. Yedwa, W. Masamba
doaj