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2,308 Newest Publications about the topic olefins

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Hydrofunctionalization of olefins to value-added chemicals via photocatalytic coupling

03-Jul-2018 | Yonghui Fan; Shenggang Li; Jingxian Bao; Lei Shi; Yanzhang Yang; Fei Yu; Peng Gao; Hui Wang; Liangshu Zhong; Yuhan Sun, Green Chemistry, 2018

A green strategy was developed for synthesis of various value-added chemicals using methanol, acetonitrile, acetic acid, acetone and ethyl acetate as the hydrogen source by coupling them with olefins over heterogeneous photocatalysts. A radical coupling mechanism was proposed for the ...

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Efficient and recyclable ionic diphosphine-based Ir-catalyst for hydroaminomethylation of olefins with H2O as hydrogen source

26-Jun-2018 | Huan Liu; Da Yang; dongliang wang; Peng Wang; Yong Lu; Vo Thanh Giang; Ye Liu, Chemical Communication, 2018

Hydroaminomethylation of olefins with H2O as hydrogen source was accomplished over an Ir-catalyst with the involvement of an ionic diphosphine (L6). The use of H2O as the hydrogen source could completely inhibit the hydrogenation of olefins. The π-accepting ability and improved stability of L6 ...

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Organic Ligand Free Carbonylation Reactions with Unsupported Bulk Pd as Catalyst

26-Jun-2018 | Shujuan Liu; Hongli Wang; Xingchao Dai; Feng Shi, Green Chemistry, 2018

Here, surprising results are presented in bulk Pd catalyzed carbonylation reactions. Three types of carbonylation reactions can be realized efficiently under organic ligand-free conditions, i.e., hydroaminocarbonylation of olefins, aminocarbonylation of aryl iodides and oxidative carbonylation of ...

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Electrochemical oxidative radical oxysulfuration of styrene derivatives with thiols and nucleophilic oxygen sources

26-Jun-2018 | Yang Wang; Lingling Deng; Haibo Mei; Bingnan Du; Jianlin Han; Yi Pan, Green Chemistry, 2018

Oxydifunctionalization of olefins represents a powerful tool and yet a challenging task. Previous methods usually require a stoichiometric amount of a strong oxidant and an expensive transition-metal catalyst. This work describes the first example of the electrochemical oxysulfuration reaction of ...

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Pd-Catalyzed reductive heck reaction of olefins with aryl bromides for Csp2–Csp3 bond formation

06-Jun-2018 | Liqun Jin; Jiaxia Qian; Nan Sun; Baoxiang Hu; Zhenlu Shen; Xinquan Hu, Chemical Communication, 2018

We developed a Pd-catalyzed intermolecular reductive Heck reaction to construct Csp2–Csp3 bonds between aryl bromides and olefins. Various styrene derivatives, acyclic and cyclic alkenes, were well tolerated to couple with varied aryl bromides in linear selectivity. Kinetic and deuterium labeling ...

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Accessing highly functionalized cyclopentanoids via a cascade palladation approach: unprecedented benzylic C–H activation towards cyclopentenoindanes

01-Jun-2018 | P. V. Santhini; A. S. Smrithy; C. P. Irfana Jesin; Sunil Varughese; Jubi John; K. V. Radhakrishnan, Chemical Communication, 2018

A Pd-catalyzed synthesis of 3,4,5-trisubstituted cyclopentenes from diazabicyclic olefins and o-iodobenzoates has been developed. The hitherto unknown cascade process involves three stages: carbopalladation, oxypalladation and a Tsuji–Trost reaction. We have also developed a facile route ...

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Accessing highly functionalized cyclopentanoids via a cascade palladation approach: unprecedented benzylic C–H activation towards cyclopentenoindanes

01-Jun-2018 | P. V. Santhini; A. S. Smrithy; C. P. Irfana Jesin; Sunil Varughese; Jubi John; K. V. Radhakrishnan, Chemical Communication, 2018

A Pd-catalyzed synthesis of 3,4,5-trisubstituted cyclopentenes from diazabicyclic olefins and o-iodobenzoates has been developed. The hitherto unknown cascade process involves three stages: carbopalladation, oxypalladation and a Tsuji–Trost reaction. We have also developed a facile route ...

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Molecules, Vol. 23, Pages 1311: Enantiomerically Enriched 1,2-P,N-Bidentate Ferrocenyl Ligands for 1,3-Dipolar Cycloaddition and Transfer Hydrogenation Reactions

30-May-2018 | Utepova, Irina A.; Serebrennikova, Polina O.; Streltsova, Marina S.; Musikhina, Alexandra A.; Fedorchenko, Tatia ..., Molecules, 2018

Molecules, Vol. 23, Pages 1311: Enantiomerically Enriched 1,2-P,N-Bidentate Ferrocenyl Ligands for 1,3-Dipolar Cycloaddition and Transfer Hydrogenation Reactions Molecules doi: 10.3390/molecules23061311 Authors: Irina A. Utepova Polina O. Serebrennikova Marina S. ...

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Highly enantioselective synthesis of trifluoromethyl cyclopropanes by using Ru(II)–Pheox catalysts

27-May-2018 | Manato Kotozaki; Soda Chanthamath; Takuji Fujii; Kazutaka Shibatomi; Seiji Iwasa, Chemical Communication, 2018

An asymmetric synthesis of various trifluoromethyl cyclopropanes from olefins, such as vinyl ferrocene, vinyl ethers, vinyl amines, vinyl carbamates and dienes, was achieved by using Ru(ii)–Pheox catalysts. This catalytic system can function at a low catalyst loading (3 mol%) compared with those ...

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Catalytic, metal-free sulfonylcyanation of alkenes via visible light organophotoredox catalysis

27-May-2018 | Jianfeng Sun; Peng Li; Lei Guo; Fang Yu; Yu-Peng He; Lingling Chu, Chemical Communication, 2018

The group transfer radical addition of olefins with tosyl cyanide has been accomplished via visible light-induced organophotoredox catalysis. A diverse array of olefins is amenable to this protocol, furnishing β-sulfonyl nitriles with excellent efficiency under metal-free and redox-neutral ...

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