Why can phenoxide's negative charge only be stabilized through resonance in the ortho/para position but not the meta position? Provide a drawing to explain your answer.
Why can phenoxide's negative charge only be stabilized through resonance in the ortho/para position but not...
Objectives - Section 1 • Identify a substituent as an ortho para director or a meta director, Draw the resonance structure that explains the relative directing ability of a specific substituent. Classify a substituent as an activating or a deactivating group. Explain why the halogens are ortho/para directors but are deactivators. • 1. Draw the mechanism of the reaction below and use resonance structures of the arenium ion intermediate to explain why the starting material is an ortho/para director
Provide a resonance structures which explain why ortho and para nitrophenol are much more acidic than phenol
why is 16.17 in ortho and para position instead of meta position? Problem 16.17 d HNO3 Hasda O2N1 NO Problem 16.26 a SO,H Cl2 SOH so, H2SO4 FeCl3
Label the following as activating (A) or deactivating (D), and then also as ortho/para directors (OP) or meta directors (M). Write the answer below each group. N "Here with other ty A/D? = = = = OP/M? = f) Using resonance structures, explain why a nitro group is "meta-directing" (i.e. does the nitro group actually affect the meta positions?) g) As mentioned in class, the halogens are a bit anomalous as substituents on the aromatic ring: they are deactivating groups,...
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance-stabilized, carbocation intermediate, which loses a proton to form a neutral substituted product. Complete the reaction mechanism below showing movement of electrons and all possible resonance structures for the carbocation intermediate. (4 points) 5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance- stabilized, carbocation intermediate, which loses a proton to form a neutral substituted product. Complete the reaction mechanism below showing movement of electrons...
2. Using resonance contributors for the intermediate carbocation, explain why a phenyl group is an ortho-para director. FeCl3 + Cl2
In nitration of acetanilide(synthesis of p-nitroaniline) main product is ortho and para. Explain why ortho and para product is major in resonance and mechanism term.
Compare the resonance structures of meta and para position cyclohexadienyl cation with the calculated charge distribution from PM3 calculations for each ion by explaining the ways in which they are consistent.
Using resonance structures and a brief explanation, explain why phenol (C6H5OH) is an ortho-para director (25 pts).
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance stabilized, carbocation intermediate, which loses a proton to form a neutral substituted product Complete the reaction mechanism below showing movement of electrons and all possible resonance structures for the carbocation intermediate. (4 points) HNO H2SO4 ON H,0*