";s:4:"text";s:3095:" Nitrobenzene contains NO2 attached to benzene and generally the rule is that electron withdrawing groups attached to benzene ring are meta or 3-directing. Electrophilic substitution in methylbenzene. Hence, nitro group are also called as deactivating group and are always meta directing. CH3 groups are ortho-para directing, so you could either place the 3rd group (CH3+) on position 2, 4, or 6. Nitro group (-NO2), having -I and -R effect, is an electron withdrawing and deactivating group. Electrophilic Aromatic Substitution: Regioselectivity in the Nitration of Methyl Benzoate O OCH3 H2SO4 HNO3 O OCH3 NO2 O OCH3 NO2 O OCH3 NO2 OR meta-substituted ortho-/para-substituted + By carrying out the nitration of methyl benzoate and recording the M.P. CH3 groups are ortho-para directing, so you could either place the 3rd group (CH3+) on position 2, 4, or 6. The carbon with the methyl group attached is thought of as the number 1 carbon, and the ring is then numbered around from 1 to 6. Therefore, the ortho/para director CH3 is a stronger activator than NO2 and Br would be placed according to that. 2: Thus, the nitro group is a meta directing group. The nitro group is a meta-directing group.
In this work, we would like to study the substituent effects of NH 2 and NO 2 groups on benzene using Kohn–Sham density functional theory. Ortho, para directing groups are electron-donating groups; meta directing … 2: Thus, the nitro group is a meta directing group.
Because nitro groups are meta-directing, the product will be m-dinitrobenzene. Typically the order of activators is NR2, OR> X, R> meta directors. Electrophilic substitution in methylbenzene. If the opposite is observed, the substituent is called a meta directing group. ... Because nitro groups are meta-directing, the product will be m-dinitrobenzene.