52673-29-7Relevant academic research and scientific papers
Palladium-Catalyzed Carbonylative Synthesis of Aryl Selenoesters Using Formic Acid as an Ex Situ CO Source
Yano De Albuquerque, Danilo,Teixeira, Wystan K. O.,Sacramento, Manoela Do,Alves, Diego,Santi, Claudio,Schwab, Ricardo S.
supporting information, p. 595 - 605 (2022/01/12)
A new catalytic protocol for the synthesis of selenoesters from aryl iodides and diaryl diselenides has been developed, where formic acid was employed as an efficient, low-cost, and safe substitute for toxic and gaseous CO. This protocol presents a high functional group tolerance, providing access to a large family of selenoesters in high yields (up to 97%) while operating under mild reaction conditions, and avoids the use of selenol which is difficult to manipulate, easily oxidizes, and has a bad odor. Additionally, this method can be efficiently extended to the synthesis of thioesters with moderate-to-excellent yields, by employing for the first time diorganyl disulfides as precursors.
Enhancing the Potential of Miniature-Scale DNA-Compatible Radical Reactions via an Electron Donor-Acceptor Complex and a Reversible Adsorption to Solid Support Strategy
Lin, Bizhen,Lu, Weiwei,Chen, Zhen-Yu,Zhang, Yue,Duan, Yin-Zhe,Lu, Xiaojie,Yan, Ming,Zhang, Xue-Jing
supporting information, p. 7381 - 7385 (2021/10/12)
DNA-encoded library (DEL) technology is a powerful tool in the discovery of bioactive probe molecules and drug leads. Mostly, the success in DEL technology stems from the molecular diversity of the chemical libraries. However, the construction of DELs has been restricted by the idiosyncratic needs and the required low concentration (~1 mM or less) of the library intermediate. Here, we report visible-light-promoted on-DNA radical coupling reactions via an electron donor-acceptor (EDA) complex and a reversible adsorption to solid support (RASS) strategy. This protocol provides a unique solution to the challenges of increasing the reactivity of highly diluted DNA substrates and reducing the residues of heavy metals from photocatalysts. A series of on-DNA indole sulfone and selenide derivatives were obtained with good to quantitative conversions. It is anticipated that these mild-condition on-DNA radical reactions will significantly improve the chemical diversity of DELs and find widespread utility to DEL construction.
Blue light-promoted radical sulfoximido-chalcogenization of aliphatic and aromatic alkenes
Chen, Hongyi,Chen, Li,He, Ze,Zeng, Qingle
supporting information, p. 2624 - 2627 (2021/04/21)
A transition metal-free synthesis ofN-(arylthio/seleno)ethyl sulfoxidminesviablue light-promoted radical sulfoximido-chalcogenization of aliphatic and aromatic alkenes was developed. The sulfoximidation process demonstrated high chemoselectivity and allowed a broad substrate scope, completing the sulfoximido-chalcogenization of alkenes in good yields.
Highly selective radical isothiocyano-chalcogenization of alkenes with NH4SCN in water
He, Ze,Kang, Xiaokang,Xu, Chao,Zeng, Qingle
supporting information, p. 7544 - 7548 (2021/10/12)
In the presence of catalytic amounts of molecular iodine and stoichiometric potassium persulfate, a green, highly chemoselective, regioselective and cis-selective radical isothiocyano-chalcogenization of alkenes with NH4SCN in water is disclosed. This three component reaction features high selectivities, an environmentally benign process, mild conditions, high yields, excellent functional-group tolerance, and broad substrate scope. The resulting products can be further transformed into other molecules with structural similarities of these compounds to bioactive analogs.
Preparation of selenofunctionalized heterocycles via iodosobenzene-mediated intramolecular selenocyclizations of olefins with diselenides
Wang, Peng-Fei,Yi, Wei,Ling, Yong,Ming, Liang,Liu, Gong-Qing,Zhao, Yu
supporting information, p. 2587 - 2591 (2021/03/15)
An intramolecular selenocyclizations of olefins mediated by a commercially available hypervalent iodine(III) reagent, PhIO, was developed. This method provided access to a wide range of selenenylated heterocycles under ambient conditions. The striking advantages of this protocol over all previous methods include mild reaction conditions, easy operation, good yields, high levels of functional group compatibility, large–scale application and suitability for the late-stage functionalization of complex molecules of biological importance.
FeCl3-catalyzed three-component aryl-selenylation of alkenes
Xu, Chao,He, Ze,Yang, Hongqin,Chen, Hongyi,Zeng, Qingle
, (2021/06/07)
FeCl3-catalyzed three-component aryl-selenylation of alkenes with good to excellent yields has been disclosed. This method is characterized by synthesis of complicated products in a single-step reaction, simple operation and readily available commercially reagents. Finally, a reasonable mechanism of FeCl3-catalyzed aryl-selenylation is proposed.
Iodine mediated synthesis of diaryl diselenides using SeO2 as a selenium source
Kommula, Dileep,Li, Qing,Ning, Siyang,Liu, Wujun,Wang, Qian,Zhao, Zongbao K.
supporting information, p. 1026 - 1034 (2020/03/04)
A simple, eco-friendly and convenient procedure has been developed for the synthesis of diphenyl diselinides from readily available aryl boronic acids by reaction with SeO2 in the presence of iodine under simple conditions. The methodology is reported about 19 examples and applicable to a broad scope of aryl boronic acids containing electron-rich and electron-poor substituents. Apart from being milder and environmentally benign conditions, this synthetic protocol comprises a novel, reliable methodology to give good to high yields of the desired diaryl diselenides.
Rhodium-Catalyzed Enantioselective Hydroselenation of Heterobicyclic Alkenes
Li, Sifeng,Yang, Qingjing,Bian, Zhaoxiang,Wang, Jun
supporting information, p. 2781 - 2785 (2020/03/30)
A highly efficient Rh(I)/(S)-xyl-Binap catalytic system is developed for the asymmetric hydroselenation of various nonpolar olefins with diselenides. Under these mild reaction conditions, a wide range of heterobicyclic alkenes give selenol-incorporated adducts in excellent enantioselectivities (up to 97%) along with high yields (up to 96%) by overcoming self-promoted racemic hydroselenation. The strategy is also applied for kinetic resolution of unsymmetric oxabenzonorbornadiene.
Transition metal-free coupling reactions of benzylic trimethylammonium salts with di(hetero)aryl disulfides and diselenides
Li, Fuhai,Wang, Dan,Chen, Hongyi,He, Ze,Zhou, Lihong,Zeng, Qingle
supporting information, p. 13029 - 13032 (2020/11/07)
A new protocol was developed to synthesize (enantioenriched) thioethers and selenoethers from (chiral) benzylic trimethylammonium salts and di(hetero)aryl disulfides or diselenides. These syntheses were promoted by the presence of weak base and did not require the use of any transition metal, and resulted in the target products with good to excellent yields (72-94%). Using quaternary ammonium salts synthesized from enantiomerically enriched amines led to highly enantiopure benzylic thioethers and selenoethers (94-99% ee) with configurations reversed from those of their enantioenriched quaternary ammonium salts. This journal is
Metal-Free ipso -Selenocyanation of Arylboronic Acids Using Malononitrile and Selenium Dioxide
Broggi, Julie,Kosso, Anne Roly Obah,Redon, Sébastien,Vanelle, Patrice
supporting information, p. 3758 - 3764 (2019/09/30)
The first ipso -selenocyanation of arylboronic acids is achieved using selenium dioxide and malononitrile under mild conditions. The reaction is successful even without metal or base in DMSO. The major advantages of this new method are an easy set-up, excellent yields, and the use of odorless and inexpensive selenium reagents. Basic conditions subsequently afford new access to diaryldiselenides in good yields without isolating the organoselenocyanate intermediates.
