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Reduction of phenylacetylenes using Raney Ni-Al alloy, Al powder in the presence of noble metal catalysts in water

Rayhan, Ummey; Kowser, Zannatul; Islam, Md. Nurul; Redshaw, Carl; Yamato, Takehiko

Authors

Ummey Rayhan

Zannatul Kowser

Md. Nurul Islam

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Professor Carl Redshaw C.Redshaw@hull.ac.uk
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry

Takehiko Yamato



Contributors

Antigoni Kotali
Editor

Abstract

Dedicated to Prof. Kenneth Laali on the occasion of his 66th birthday Received mm-dd-yyyy Accepted mm-dd-yyyy Published on line mm-dd-yyyy Dates to be inserted by editorial office Abstract The chemoselective reduction is based on the reaction of Raney Ni–Al alloy with Al powder in water which produces in situ hydrogen to utilize the hydrogenation of the targeted functional groups. Raney Ni–Al alloy with Al powder can reduce phenylacetylenes to the corresponding ethylbenzene (3) in water in excellent yield at 120 °C for 6 h in a sealed tube. In addition, the complete reduction of aromatic ring to ethylcyclohexane (4) required 60 °C for 12 h with Raney Ni–Al alloy, Al powder in the presence of Pt/C. The appropriate selection of the reaction conditions allowed the selective preparation of ethylbenzene as well as ethylcyclohexane from phenylacetylene. 1a : R = H ,1b : R = CH 3 , 1c : R = OCH 3 ,1d : R = C(CH 3) 3

Journal Article Type Article
Publication Date Dec 13, 2017
Print ISSN 1551-7012
Electronic ISSN 1551-7012
Publisher Michigan Publishing
Peer Reviewed Peer Reviewed
Volume 2018
Issue 2
Pages 241-251
APA6 Citation Rayhan, U., Kowser, Z., Islam, M. N., Redshaw, C., & Yamato, T. (2017). Reduction of phenylacetylenes using Raney Ni-Al alloy, Al powder in the presence of noble metal catalysts in water. Arkivoc, 2018(2), 241-251. doi:10.24820/ark.5550190.p010.277
DOI https://doi.org/10.24820/ark.5550190.p010.277
Keywords Reduction; Phenylacetylene; Raney Ni-Al alloy; Noble metal catalyst; Al powder; Water; Cyclohexane ring
Publisher URL http://www.arkat-usa.org/get-file/61938/
Copyright Statement Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) https://creativecommons.org/licenses/by-nc/4.0/

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Copyright Statement
Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) https://creativecommons.org/licenses/by-nc/4.0/



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