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Showing 1 to 2 of 2 for “"Ortho Groups"”.
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The preparation of polynuclear compounds containing the thiophene ring system
… to overcome the steric effects offered by 2,6-ortho groups, 2-(2',3'-dimethylbenzyl)-benzonitrile was prepared. The starting material for this series, l-bromo-2,3-dimethylbenzene has been prepared in 47% yield by diazotization in comparison with the previous yield of 30%.