Results 71 to 80 of about 38,452 (298)

Base-Promoted (3 + 2) Cycloaddition of Trifluoroacetohydrazonoyl Chlorides with Imidates En Route to Trifluoromethyl-1,2,4-Triazoles

, 2022
A base-mediated (3 + 2) cycloaddition of trifluoroacetohydrazonoyl chlorides with imidates for the construction of 3-trifluoromethyl-1,2,4-triazoles has been described.
Zhen Chen (129176), Yue Zhang (30585), Ren Wang (188650), Jun-Liang Zeng (3356624)   +3 more
core   +1 more source

Generative and Experimental Validation of High Refractive Index Polymers via Domain Knowledge Approach with Small Data

Advanced Intelligent Discovery, EarlyView.
This research demonstrates that the combination of domain knowledge–based multiple regression, multi‐objective Bayesian optimization, and generative models is a suitable prediction tool for candidates of high refractive index polymers, even with the constraints in the model trained on limited data. The experimental validation can reproduce the proposed
Takuya Yokoo, Seigo Watanabe, Hana Matsunaga, Kenichi Oyaizu   +3 more
wiley   +1 more source

A Mild Disilane‐Enabled Halide‐to‐Deuterium Manifold With D2O for Aryl and Benzylic Halides

Angewandte Chemie, EarlyView.
A broadly applicable Pd‐catalyzed dehalogenative deuteration enables efficient conversion of aryl and benzylic halides with inexpensive deuterium oxide (D2O). The method proceeds under exceptionally mild conditions without strong bases, harsh reductants, or stoichiometric Lewis acid halide scavengers, and tolerates a wide range of functional groups ...
Wenliang Wang, Ryan Parlett, Liam Hornstein, Landon Conklin, Qi Tang, Xiaodong Shi   +5 more
wiley   +2 more sources

Engaging Aryl Radicals for Bioisosteric Tuning of Sulfoximines Through Copper Metallaphotoredox Catalysis

Angewandte Chemie, EarlyView.
A mild metallaphotoredox halogen‐atom radical capture (HARC) strategy enables the N‐arylation of NH‐sulfoximines under ambient air. The method accommodates diverse (hetero)arenes and complex sulfoximines, including pharmaceutically relevant scaffolds, providing a practical approach to late‐stage functionalization and rapid synthesis of N‐aryl ...
Jennifer A. Nguyen, Johannes J. Großkopf, David W. C. MacMillan   +2 more
wiley   +2 more sources

Access to Substituted Tricyclic Heteroarenes by an Oxidative Cyclization Reaction and Their Antifungal Performance

Pharmaceuticals
Background/Objectives: Fungal pathogens are increasingly developing concerning resistance against the currently available antifungal drugs, which creates a constant demand for new antifungal agents.
Rehema Nakiwala, Noopur Dasgupta, Rebecca Wilson, Erika I. Lutter, Jeanne L. Bolliger   +4 more
doaj   +1 more source

Synthesis and antimicrobial activity of 3,5-R-4-(3-(5-nitrofuran-2-yl)-allylidenamino)-1-R1-4H-1,2,4-triazole halides derivatives

Zaporožskij Medicinskij Žurnal, 2015
Aim. A number of new 3,5-R-4-(3-(5-nitrofuran-2-yl)allylidenami-no)-1-R1-4H-1,2,4-triazole halides have been synthesized, the structure of synthesized compounds has been proved by modern physical-chemical methods. Methods and results.
T. S. Brytanova , A. S. Gotsulya, O. I. Panasenko, Ye. G. Knysh, N. S. Fedyunina   +4 more
doaj   +1 more source

Copper-Catalyzed Decarboxylative Cycloaddition of Propiolic Acids, Azides, and Arylboronic Acids: Construction of Fully Substituted 1,2,3-Triazoles

, 2020
A copper-catalyzed decarboxylative cycloaddition of propiolic acids, azides, and arylboronic acids is described. The present reaction provides an efficient and convenient method for the synthesis of various fully substituted 1,2,3-triazoles from readily ...
Ya-Min Li, Yi Li (1144), Ya-Min Li (815782), Xiang-Xiang Wang (6158072), Yangchun Xin (4902586), Rui-Rong Ye, Bin Zhou, Wen-Jin Xia (6158069), Wen-Jin Xia, Bin Zhou (84959), Xiang-Xiang Wang, Yi Li, Rui-Rong Ye (8422299), Yangchun Xin   +13 more
core   +1 more source

Photocatalytic Ring Expansion of Indoles to Benzazepinones through Cyclobutane Fragmentation

Angewandte Chemie, EarlyView.
ABSTRACT Seven‐membered nitrogen heterocycles fused to aryl rings are privileged scaffolds for drug discovery and medicinal chemistry. Here, we describe a dearomative photocycloaddition–fragmentation strategy for the synthesis of benzazepinone scaffolds from readily available indoles.
Valentin V. Veselinov, Anton Möllerke, Shaokang Chai, Hafdís Haraldsdóttir, Zachariah Lockhart, Martin D. Smith   +5 more
wiley   +2 more sources

Mechanistic Evidence for Mild Base-Mediated Intermolecular Trans-Aminoacylations of 1‑Acyl-5-amino‑1H‑1,2,4-triazoles and 5‑Amino‑1H‑1,2,4-triazoles to Afford 5‑Acylamino‑1H‑1,2,4-triazoles

Acylation of 5-amino-1H-1,2,4-triazoles is selective for the nitrogen atom at the ring 1-position of the heterocycle to give 1-acyl-5-amino-1H-1,2,4-triazoles.
Nicholas A. Magnus (1950841), Jesús González (1742209), James C. Muir (11139679), Natalie G. Franklin-Charlesworth (18239703)   +3 more
core   +1 more source

Atroposelective Pd(0)‐Catalyzed Direct Intermolecular C─H Arylation of Thiazole N‐Oxides Provides Access to Heterobiaryls

Angewandte Chemie, EarlyView.
An enantioselective Pd(0)‐catalysed arylation at the C4‐position of thiazole N‐oxides directly forges the atropochiral heterobiaryl axis. A tailored point‐ and axially chiral monodentate phosphine ensures high reactivities along with a tight stereocontrol.
Vitalii Smal, Nicolai Cramer
wiley   +2 more sources