Sustainable Protocol for Benzylic -CH2Oxidation with Dioxygen to Phenones Using AuNPs@ Resin Beads

ChemistrySelectVolume 2, Issue 31 p. 10112-10117 Full Paper Sustainable Protocol for Benzylic -CH2 Oxidation with Dioxygen to Phenones Using AuNPs@ Resin Beads Anuj S Sharma, Anuj S Sharma Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India.Search for more papers by this authorDr. Harjinder Kaur, Corresponding Author Dr. Harjinder Kaur hk_ss_in@yahoo.com orcid.org/0000-0002-7442-0097 Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India.Search for more papers by this author Anuj S Sharma, Anuj S Sharma Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India.Search for more papers by this authorDr. Harjinder Kaur, Corresponding Author Dr. Harjinder Kaur hk_ss_in@yahoo.com orcid.org/0000-0002-7442-0097 Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India.Search for more papers by this author First published: 02 November 2017 https://doi.org/10.1002/slct.201702157Citations: 7Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Graphical Abstract A sustainable, green and efficient protocol is developed for the C−H activation of alkyl substituted benzene by using molecular oxygen as green oxidant at atmospheric pressure using Au NPs@ Polystyrene resin. The catalyst displayed good stability (thermal and chemical) and recyclability. Abstract Lately, synthesis of acetophenone from alkyl substituted benzene via a selective oxidation process has become a topic of specific interest because acetophenone is an essential raw material for the production of pharmaceuticals, perfumes, alcohols, esters and aldehydes. Nanogold has emerged as an efficient catalyst for selective oxidation reactions. Herein, we present supported AuNPs (2-5 nm) catalysed C−H oxidation of alkyl substituted benzenes with molecular oxygen as green oxidant at atmospheric pressure. Gas chromatography coupled with mass spectroscopy (GC-MS) used for analysis of reaction mixture showed high conversion (> 98%) and high selectivity (99% ) for acetophenone with a Turn over number of 2579. The catalyst displayed good stability (thermal and chemical) and recyclability. The generality of the protocol was tested for the oxidation of a number of substituted ethylbenzene derivatives and other CH2 bonded molecules. Conflict of interest The authors declare no conflict of interest. Citing Literature Supporting Information As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Filename Description slct201702157-sup-0001-misc_information.pdf1.1 MB Supplementary Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume2, Issue31October 31, 2017Pages 10112-10117 RelatedInformation