219715-29-4Relevant academic research and scientific papers
Synthesis of benzyl thioether derivatives via N-heterocyclic carbene palladium(II)-catalyzed cross coupling of benzylammonium salts with thiophenols
Wang, Tao,Guo, Jiarui,Xu, Yongli,Wang, Xiaobo,Wang, Yan,Feng, Dandan,Liu, Lantao
, (2021/12/01)
A new route to benzyl thioether derivatives has been developed via the N-heterocyclic carbene palladium(II)-catalyzed cross coupling of benzylammonium salts with thiophenols. Under the optimal conditions, different benzylammonium salts could be well toler
Photochemical Functionalization of Heterocycles with EBX Reagents: C?H Alkynylation versus Deconstructive Ring Cleavage**
Voutyritsa, Errika,Garreau, Marion,Kokotou, Maroula G.,Triandafillidi, Ierasia,Waser, Jér?me,Kokotos, Christoforos G.
supporting information, p. 14453 - 14460 (2020/10/12)
The development of novel methodologies for the functionalization of saturated heterocycles is highly desirable. Herein, we report a cheap and efficient photochemical method for the C?H functionalization of saturated O-heterocycles, as well as the deconstructive ring-cleavage of S-heterocycles, employing hypervalent iodine alkynylation reagents (ethynylbenziodoxolones, EBX). This photochemical alkynylation is performed utilizing phenylglyoxylic acid as the photoinitiator, leading to the corresponding products in good to high yields, under household fluorescent light bulb irradiation. When O-heterocycles were employed, the expected α-C?H alkynylation took place. In contrast, oxidative ring-opening to form a thioalkyne and an aldehyde was observed with S-heterocycles. Preliminary mechanistic experiments are presented to give first insights into this puzzling divergent reactivity.
Fe3O4@SiO2-copper sucrose xanthate as a green nanocatalyst for N-, O- and S-arylation
Radfar, Iman,Kazemi Miraki, Maryam,Esfandiary, Naghmeh,Ghandi, Leila,Heydari, Akbar
, (2019/01/04)
Formation of C(sp2)–X bonds was carried out using a Fe3O4@SiO2-copper(I) sucrose xanthate nanoparticle catalyst with the aid of the copper(I) xanthate moiety in the catalyst which was prepared from the reaction between sucrose and carbon disulfide through an alkaline medium via the traditional Zeise approach. Various techniques were employed for the characterization of these novel nanoparticles. Three sorts of heteroatoms, N, O and S, successfully underwent heteroatom arylation to produce secondary or tertiary amines, ethers and thioethers, respectively.
Efficient nickel/N-heterocyclic carbene catalyzed C-S cross-coupling
Guan, Pei,Cao, Changsheng,Liu, Yun,Li, Yunfei,He, Pan,Chen, Qian,Liu, Gang,Shi, Yanhui
supporting information, p. 5987 - 5992,6 (2012/12/12)
The cross-coupling reaction of aryl halides with aliphatic and aromatic thiols catalyzed by readily available Ni(OAc)2 with N-heterocyclic carbene (NHC) is reported. Ni(OAc)2/NHC catalyst showed good activities toward various aryl halides in C-S coupling reaction, even with aryl chlorides. Reactions occurred in excellent yields, broad scope, and high tolerance of functional groups.
Efficient nickel/N-heterocyclic carbene catalyzed C-S cross-coupling
Guan, Pei,Cao, Changsheng,Liu, Yun,Li, Yunfei,He, Pan,Chen, Qian,Liu, Gang,Shi, Yanhui
supporting information, p. 5987 - 5992 (2013/01/13)
The cross-coupling reaction of aryl halides with aliphatic and aromatic thiols catalyzed by readily available Ni(OAc)2 with N-heterocyclic carbene (NHC) is reported. Ni(OAc)2/NHC catalyst showed good activities toward various aryl halides in C-S coupling reaction, even with aryl chlorides. Reactions occurred in excellent yields, broad scope, and high tolerance of functional groups.
Carbon-sulfur coupling reactions catalyzed by Pd-NHC complex
Shi, Yanhui,Cai, Zhengyuan,Guan, Pei,Pang, Guangsheng
supporting information; experimental part, p. 2090 - 2096 (2011/10/09)
The cross-coupling reaction of aryl halides with aliphatic or aromatic thiols catalyzed by (SIPr)Pd(Py)Clis reported. This Pd-N-heterocyclic carbene (NHC) complex shows good to excellent activities toward various deactivated electron-rich aryl halides and even with unactivated aryl chlorides in C-S coupling reactions. The reactions proceeded in good yields, broad scope, and high tolerance of functional groups. The Pd-NHC complex is stable and easily to synthesize, so it is an excellent candidate to replace Pd-organophosphanes commonly used in C-S coupling catalysis. Georg Thieme Verlag Stuttgart - New York.
Synthesis of aryl benzyl NH-sulfoximines
Barry, Nicola,Brondel, Nicolas,Lawrence, Simon E.,Maguire, Anita R.
experimental part, p. 10660 - 10670 (2010/01/16)
Efficient synthesis and characterisation of a series of aryl benzyl NH-sulfoximines are described. While N-protected versions of aryl benzyl sulfoximines have been previously described, reports of their deprotection are very limited, presumably due to lab
A general and efficient CuI/BtH catalyzed coupling of aryl halides with thiols
Verma, Akhilesh Kumar,Singh, Jaspal,Chaudhary, Ritu
, p. 7199 - 7202 (2008/03/11)
We report an exceptionally mild, general and efficient copper catalyzed cross coupling reaction of aryl bromides and thiols using 0.5 mol % CuI and 1 mol % benzotriazole. Experimental simplicity, generality, functional group tolerance and low cost of the catalyst are advantages of the protocol.
A Facile One-Pot Synthesis of Alkyl Aryl Sulfides from Aryl Bromides
Ham, Jungyeob,Yang, Inho,Kang, Heonjoong
, p. 3236 - 3239 (2007/10/03)
A convenient one-pot synthetic method for the formation of alkyl aryl sulfides from various alkyl halides and lithium aryl thiolates that are prepared in situ by direct halogen-lithium exchange is reported. In particular, the method overcomes many of the problems encountered in previous reports; it is very quick, catalyst-free, and does not involve use of unstable aryl thiols.
N-(?1, 2, 4! triazoloazinyl) benzenesulfonamide and pyridinesulfonamide compounds and their use as herbicides
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, (2008/06/13)
N-(Triazoloazinyl)arylsulfonamide compounds, such as 2,6-dimethoxy-N-(8-chloro-5-methoxy?1,2,4!-triazolo?1,5-c!pyrimidin-2-yl)benzenesulfonamide, 2-methoxy-4-(trifluoromethyl)-N-(5,8-dimethoxy?1,2,4!-triazolo?1,5-c!pyrimidin-2-yl)pyridine-3-sulfonamide, a
