Natural abundance 17O NMR study of 2- and 4-substituted benzoyl chlorides期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Natural abundance 17O NMR study of 2- and 4-substituted benzoyl chlorides

Institution:	1. Department of Zoology, Wildlife and Fisheries University of Agriculture, Faisalabad, Pakistan;2. Department of Zoology, Government College University Faisalabad, Pakistan;3. Department of Biochemistry and Biotechnology, University of Gujrat, Gujrat, Pakistan;4. Department of Microbiology, Government College University Faisalabad, Pakistan;5. Department of Zoology, College of Science King Saud University, Riyadh 11451, Saudi Arabia;1. College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China;2. Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China;3. State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China

Abstract:	Natural abundance ¹⁷O NMR chemical shift data for 17 ortho and para benzoyl chlorides recorded in acetonitrile at 75°C are reported. ¹⁷O NMR data for the para substituted benzoyl chlorides are correlated with ¹⁷O NMR data for similarly substituted acetophenones and methyl benzoates. The ¹⁷O NMR signals for ortho isomers are downfield (ca 30 ppm) from their para isomers; the downfield shifts are consistent with torsion angle change. The ¹⁷O NMR data for the para isomers gave good correlations with σ⁺ constants and with dual substituent parameters (DSP).

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