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2,945 Newest Publications in advanced synthesis & catalysis

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A Heteroarylamine Library: Indium‐Catalyzed Nucleophilic Aromatic Substitution of Alkoxyheteroarenes with Amines

11-Jan-2018 | Kyohei Yonekura, Yasuhiro Yoshimura, Mizuri Akehi, Teruhisa Tsuchimoto, Advanced Synthesis & Catalysis, 2018

Under indium Lewis acid catalysis, electron‐rich five‐membered heteroaryl electrophiles fused with/without a benzene ring were found to couple with amines to produce heteroarylamines with broad structural diversity. The heteroarylamine formation proceeds through the cleavage of a heteroaryl–OMe ...

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Visible‐Light‐Promoted Decarboxylative Giese Reactions of α‐Aryl Ethenylphosphonates and the Application in the Synthesis of Fosmidomycin Analogue

11-Jan-2018 | Ting Guo, Li Zhang, Yewen Fang, Xiaoping Jin, Yan Li, Ruifeng Li, Xie Li, Wu Cen, Xiaobo Liu, Zongming Tian, Advanced Synthesis & Catalysis, 2018

An unprecedented approach for the synthesis of α‐aryl alkylphosphonates based on visible‐light photocatalytic Giese reaction of α‐aryl vinylphosphonates with aliphatic carboxylic acids has been successfully developed. This protocol tolerates a wide range of functional groups and shows broad ...

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Visible‐Light‐Promoted Decarboxylative Giese Reactions of α‐Aryl Ethenylphosphonates and the Application in the Synthesis of Fosmidomycin Analogue

11-Jan-2018 | Ting Guo, Li Zhang, Yewen Fang, Xiaoping Jin, Yan Li, Ruifeng Li, Xie Li, Wu Cen, Xiaobo Liu, Zongming Tian, Advanced Synthesis & Catalysis, 2018

An unprecedented approach for the synthesis of α‐aryl alkylphosphonates based on visible‐light photocatalytic Giese reaction of α‐aryl vinylphosphonates with aliphatic carboxylic acids has been successfully developed. This protocol tolerates a wide range of functional groups and shows broad ...

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Water‐Mediated One‐pot Three‐Component Synthesis of Hydrazinyl‐Thiazoles Catalyzed by Copper Oxide Nanoparticles Dispersed on Titanium Dioxide Support: A Green Catalytic Process

06-Jan-2018 | Trivikram Reddy Gundala, Kumar Godugu, Nallagondu Chinna Gangi Reddy, Advanced Synthesis & Catalysis, 2018

The present work describes the catalytic activity of copper oxide nanoparticles dispersed on titanium dioxide in water for one‐pot synthesis of a library of hydrazinyl‐thiazoles via a three‐component reaction of various aldehydes/ketones with thiosemicarbazide and different phenacyl bromides. ...

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Rhodium(III)‐Catalyzed Selective Direct Olefination of Imidazoles

06-Jan-2018 | Lijin Xu, Haoqiang Zhao, Jianbin Xu, Changjun Chen, Xin Xu, Yixiao Pan, Zongyao Zhang, Huanrong Li, Advanced Synthesis & Catalysis, 2018

Rhodium(III)‐catalyzed chelation‐assisted highly regio‐ and stereoselective direct olefination of imidazoles with olefins has been developed. A broad range of C2‐substituted N‐(2‐pyrimidyl)imidazoles underwent smooth C5‐olefination with both activated and unactivated olefins to furnish the ...

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Regioselective Synthesis of Angular Isocoumarinoselenazoles: A Benzoselenazole Directed Site Specific Ruthenium‐catalyzed C(sp2)‐H Functionalization

02-Jan-2018 | SANDIP DHOLE, Jen-Yu Liao, Sunil Kumar Dhull, Deepak Salunke, Chung-Ming Sun, Advanced Synthesis & Catalysis, 2018

Synthesis of new angular isocoumarinoselenazoles is described which involves the construction of 2‐amino benzoselenazoles, their regioselective C2 N‐alkylation and alkyne insertion. An expeditious and metal‐free synthesis of 2‐aminobenzoselenazoles by the reaction of methyl ...

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Rhodium‐Catalyzed Regioselective Ortho C‐H Olefination of 2‐Arylindoles via NH‐Indole‐Directed C‐H Bond Cleavage

01-Jan-2018 | Qingshuai Han, Xiemin Guo, Ziyuan Tang, Lv Su, Zizhu Yao, Xiaofeng Zhang, Shen Lin, ShengChang Xiang, Qiufeng Huang, Advanced Synthesis & Catalysis, 2018

In the past decades, C‐H oxidative olefination of indole at C‐2, C‐3, C‐4 and C‐7 positions was well addressed. We report here a rhodium‐catalyzed NH‐indole‐directed ortho C‐H bond olefination of 2‐arylindoles. This cross‐dehydrogenative‐coupling proved to be broad in substrate scope, tolerating ...

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Direct Reductive Amination of Carbonyl Compounds Catalyzed by a Moisture Tolerant Tin(IV) Lewis Acid

28-Dec-2017 | Joshua Sapsford, Daniel Scott, Nathan Allcock, Matthew J. Fuchter, Christopher Tighe, Andrew Ashley, Advanced Synthesis & Catalysis, 2017

Despite the ever‐broadening applications of main‐group ‘frustrated Lewis pair’ (FLP) chemistry to both new and established reactions, their typical intolerance of water, especially at elevated temperatures (> 100°C), represents a key barrier to their mainstream adoption. Herein we report that ...

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Rh‐Catalyzed Annulation of ortho‐ C‐H Bonds of 2‐Arylimidazoles with 1,4,2‐Dioxazol‐5‐ones toward 5‐Arylimidazo[1,2‐c]quinazolines

28-Dec-2017 | Xiaopeng Wu, Song Sun, Shengbo Xu, Jiang Cheng, Advanced Synthesis & Catalysis, 2017

A Rh‐catalyzed unique and direct approach for constructing a series of 5‐arylimidazo[1,2‐c]quinazolines in moderate to excellent yields from simple and readily available 2‐arylimidazoles and 3‐phenyl‐1,4,2‐dioxazol‐5‐ones was described. This procedure proceeds with sequential ortho‐ C‐H bond ...

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Diastereoselective Electrophilic Trifluoromethylthiolation of Chiral Oxazolidinones: Access to Enantiopure α‐SCF3 Alcohols

26-Dec-2017 | Hélène Chachignon, Evgenii Kondrashov, Dominique Cahard, Advanced Synthesis & Catalysis, 2017

Lithium imide enolates featuring Evans’ chiral oxazolidinone auxiliary were involved in diastereoselective α‐trifluoromethylthiolation with electrophilic SCF3 donors. Diastereopure products were isolated and converted to enantiopure α‐SCF3 alcohols without racemisation.

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