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105.845 Aktuelle Fachpublikationen zum Thema synthesis

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Silver(I)-catalyzed sequential hydroamination and Prins type cyclization for the synthesis of fused benzo--sultams

03.07.2018 | B. Maheshwar Rao; J. S. Yadav; B. Sridhar; B. V. Subba Reddy, Organic & Biomolecular Chemistry, 2018

An intramolecular annulation strategy has been developed for the synthesis of tetrahydrobenzo[e]pyrano[4,3-c][1,2]thiazine derivatives by means of coupling of aldehydes with 2-(4-hydroxybut-1-yn-1-yl)-N-arylsulfonamides using a catalytic amount of silver hexafluoroantimonate in toluene at 80 °C. ...

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An efficient iodine pentoxide-triggered iodocarbocyclizations for the synthesis of iodooxindoles in water

03.07.2018 | Ming-Zhong Zhang; Xin Wang; Ming-Ying Gong; Lin Chen; Wenbin Shi; Shu-Hua He; Yong Jiang; Tieqiao Chen, Organic & Biomolecular Chemistry, 2018

An efficient iodocarbocyclization of alkenes for the synthesis of iodooxindoles has been developed. This reaction proceeds in a chemoselective manner and shows excellent tolerance of various functional groups, including a chemosensitive hydroxymethyl group. Nonmetal inorganic iodine pentoxide was ...

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Copper-Catalyzed Cyclization of 2-Cyanobenzaldehydes and 2-Isocyanoacetates: an Efficient Strategy for the Synthesis of Substituted 1-Aminoisoquinolines

03.07.2018 | Wen Bao; Jun-Qi Wang; Xuetao Xu; Bang-Hong Zhang; Wei-Ting Liu; Lin-Sheng Lei; Huan Liang; Kun Zhang; Shao-Hua Wang, Chemical Communication, 2018

A Cu(acac)2-catalyzed cyclization reaction of 2-cyanobenzaldehydes with 2-isocyanoacetates has been successfully developed providing an efficient strategy for the synthesis of substituted 1-aminoisoquinoline. The reaction proceeds smoothly under mild conditions with high efficiency, and might ...

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Cyclometalated Ir(III) complexes [Ir(tpy)(bbibH2)Cl][PF6] and [Ir(tpy)(bmbib)Cl][PF6]: intramolecular ∙∙∙ interaction leading to facile synthesis and enhanced luminescence

03.07.2018 | Zhong-Ze Qu; Tao-Bao Gao; Jing Wen; Kai Rui; Haibo Ma; Deng-Ke Cao, Dalton Transactions, 2018

Cyclometalated Ir(III) complexes [Ir(tpy)(bbibH2)Cl][PF6] (1PF6) and [Ir(tpy)(bmbib)Cl][PF6] (2PF6), and the controlled complex [Ir(tpy)(mbib)Cl][PF6] (3PF6) have been synthesized at 135 oC for 10 hours for the former two complexes, while at 190 oC for 24 hours for the latter complex (Scheme ...

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Synthesis of cationic molybdenum-cobalt heterometallic clusters protected against hydrolysis by macrocyclic triazacyclononane complexes

03.07.2018 | Sugiarto .; Tomoko Tagami; Keisuke Kawamoto; Yoshihito Hayashi, Dalton Transactions, 2018

Four kinds of cobalt-polyoxomolybdenum clusters were synthesized by a combination of polyoxomolybdates and a Co-tacn (tacn = 1,4,7-triazacyclononane) complex. The heterometallic polynuclear clusters were obtained by the reaction of Na2MoO4 and [Co(tacn)(H2O)3](CF3SO3)3∙H2O in aqueous solution. ...

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A versatile biosynthetic approach to amide bond formation

03.07.2018 | Helena K. Philpott; Pamela J. Thomas; David Tew; Doug E. Fuerst; Sarah L. Lovelock, Green Chemistry, 2018

The development of versatile and sustainable catalytic strategies for amide bond formation is a major objective for the pharmaceutical sector and the wider chemical industry. Herein, we report a biocatalytic approach to amide synthesis which exploits the diversity of Nature's amide bond forming ...

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Synthesis, Structure, Photophysical and Electrochemical Properties of Ru(II) Complexes of Arylene-Vinylene Terpyridyl Conjugates

03.07.2018 | Amit Sil; Sabyasachi Roy Chowdhury; Sabyashachi Mishra; Sanjib K Patra, Dalton Transactions, 2018

A series of arylene-vinylene π-conjugated terpyridyl ruthenium(II) complexes, [Ru(PPh3)2Cl(tpy-C6H4-CH=CH-Ar)][PF6] (1-4; tpy = 2,2':6',2''-terpyridyl where Ar = phenyl, tolyl, 1-naphthyl and 9-anthracenyl as substituents on 4′ position of tpy) have been synthesized and characterized by ...

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Microwave-assisted dry-gel conversion - a new sustainable route for the rapid synthesis of metal-organic frameworks with solvent re-use

03.07.2018 | Niels Tannert; Serkan Gökpinar; Emrah Hastürk; Sandra Nießing; Christoph Janiak, Dalton Transactions, 2018

Microwave-assisted dry-gel conversion (MW-DGC) combines advantages of concentrated reactants in DGC with fast heating by microwave irradiation. This novel combination allows to drastically decrease the amount of solvent needed for synthesis and reaction times with energy needed. Further, MW-DGC ...

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One-step surfactant-free synthesis of KSc2F7 microcrystals: controllable phases, rich morphologies and multicolor down conversion luminescence properties

03.07.2018 | Jie Xiong; Jie Yu; Yufeng Zhang; Wenpeng Xia; Shanshan Hu; Yanfei Zhang; Jun Yang, CrystEngComm, 2018

Homogeneous KSc2F7 microcrystals with controlled and abundant morphologies were prepared by a one-step hydrothermal route without employing any templates or surfactants. Particularly, uniform and well-defined KSc2F7 crystals with rod, sheet, flower-like, thin rectangular, xylitol-like and thin ...

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Synthesis of N-arylsulfonamides via Fe-promoted reaction of sulfonyl halides with nitroarenes in an aqueous medium

03.07.2018 | Jun Jiang; Sheng Zeng; De Chen; Chaozhihui Cheng; Wei Deng; Jiannan Xiang, Organic & Biomolecular Chemistry, 2018

A fascinating Fe-promoted protocol for the synthesis of N-arylsulfonamides has been developed. Starting from commercially available nitroarenes and sulfonyl chlorides, moderate to excellent yields of the corresponding N-arylsulfonamides can be obtained. In particular, Fe dust serves as the sole ...

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