Results 21 to 30 of about 4,159,820 (313)

Transition Metal-Free Difunctionalization of Sulfur Nucleophiles [PDF]

, 2022
Efficient protocols for accessing iodo-implanted diaryl and aryl(vinyl) thioethers have been developed using iodonium salts as reactive electrophilic arylation and vinylation reagents. The reactions take place under transition metal-free, thiol-free, and
Berit, Olofsson, Ester Maria, Di Tommaso, Shobhan, Mondal   +2 more
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“Cut and Paste” Processes in the Search of Bioactive Products: One-Pot, Metal-free O-Radical Scission-Oxidation-Addition of C, N or P-Nucleophiles

Frontiers in Chemistry, 2022
Hypervalent iodine reagents have been applied in many metal-free, efficient synthesis of natural products and other bioactive compounds. In particular, treatment of alcohols, acetals and acids with hypervalent iodine reagents and iodine results in O ...
Marina Porras, Dácil Hernández, Concepción C. González, Alicia Boto   +3 more
doaj   +1 more source

Transition‐Metal‐Free Cleavage of CO [PDF]

Chemistry – A European Journal, 2017
AbstractTertiary silane 1H, 2‐[(diphenylsilyl)methyl]‐6‐methylpyridine, reacts with tris(pentafluorophenyl)borane (BCF) to form the intramolecular pyridine‐stabilized silylium 1+‐HBCF. The corresponding 2‐[(diphenylsilyl)methyl]pyridine, lacking the methyl‐group on the pyridine ring, forms classic N(py)→B adduct 2H‐BCF featuring an intact silane Si−H ...
Devillard, Marc, De bruin, Bas, Siegler, Maxime, Van der vlugt, J.   +3 more
openaire   +5 more sources

Metal-Free-Visible Light C–H Alkylation of Heteroaromatics via Hypervalent Iodine-Promoted Decarboxylation [PDF]

, 2018
A metal-free photoredox C–H alkylation of heteroaromatics from readily available carboxylic acids using an organic photocatalyst and hypervalent iodine reagents under blue LED light is reported.
Julien Genovino (1921726), Gajendra Ingle (5228567), Antoine Juneau (3363884), Mathieu Frenette (1342926), Yajing Lian (1295673), Taylor O. Hope (5228573), Yuan Zhang (41832), Yohann Gagné (5228570)   +7 more
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First Metal-Free Synthesis of Tetracyclic Pyrido and Pyrazino Thienopyrimidinone Molecules

Molecules, 2018
We report herein a new metal free synthetic pathway to generate tetracyclic compounds from 3-aminothieno[3,2-b]pyridine-2-carboxylate. To enlarge the molecular diversity, we studied the Suzuki coupling of 9-chloro-6H-pyrido[1,2-a]pyrido[2′,3′:4,5]thieno ...
Mohammed Aounzou, Joana F. Campos, Mohammed Loubidi, Sabine Berteina-Raboin   +3 more
doaj   +1 more source

Metal-free photo-induced sulfidation of aryl iodide and other chalcogenation

Frontiers in Chemistry, 2022
A photo-induced C-S radical cross-coupling of aryl iodides and disulfides under transition-metal and external photosensitizer free conditions for the synthesis of aryl sulfides at room temperature has been presented, which features mild reaction ...
Shuai Mao, Yahao Zhao, Zixuan Luo, Ruizhe Wang, Bo Yuan, Jianping Hu, Linghao Hu, Linghao Hu, San-Qi Zhang, Xiaoxing Ye, Mingliang Wang, Mingliang Wang, Zhengkai Chen   +12 more
doaj   +1 more source

An efficient metal-free and catalyst-free C–S/C–O bond-formation strategy: synthesis of pyrazole-conjugated thioamides and amides

Beilstein Journal of Organic Chemistry, 2023
An operationally simple and metal-free approach is described for the synthesis of pyrazole-tethered thioamide and amide conjugates. The thioamides were generated by employing a three-component reaction of diverse pyrazole C-3/4/5 carbaldehydes, secondary
Shubham Sharma, Dharmender Singh, Sunit Kumar, Vaishali, Rahul Jamra, Naveen Banyal, Deepika, Chandi C. Malakar, Virender Singh   +8 more
doaj   +1 more source

Metal-Free Molecular Perovskite High-Energetic Materials [PDF]

, 2020
Metal-free energetic materials generally have the advantages of high gas yield and metal-free residue after combustion or explosion, enabling them to be widely used as explosives and propellant components.
Zhi-Hong Yu, Wei-Xiong Zhang, Wei-Xiong Zhang (1628500), Rui-Kang Huang (3393935), Chun-Ting He, Yu Shang (49702), Xiao-Ming Chen, Zi-Ming Ye (1586923), Chun-Ting He (1586929), Zhi-Hong Yu (1330563), Xiao-Ming Chen (170694), Shao-Li Chen, Rui-Kang Huang, Shao-Li Chen (3232113), Zi-Ming Ye, Yu Shang   +15 more
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Latarjet Cerclage: The Metal‐Free Fixation

Arthroscopy Techniques, 2020
Abstract The Latarjet technique is a widely used technique for anterior shoulder instability with glenoid bone defects, irreparable capsuloligamentous lesion, or in patients at greater risk of recurrence.
Hachem, Abdul-Ilah, Costa D’O, Gino, Rondanelli S., Rafael, Rius, Xavier, Barco, Raúl   +4 more
openaire   +5 more sources

Carbon-Based Metal Free Catalysts : Preparation, Structural and Morphological Property and Application [PDF]

, 2022
Carbon-Based Metal Free Catalysts: Preparation, Structural and Morphological Property and Application covers the dierent aspects of carbon-based metal free catalysts, including the fabrication of catalysts from natural sources and carbon allotropes ...

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