Identify the substituent groups on the alkenes below as electron withdrawing or electron donating by putting EWG or EDG after the structure letter.
The cyano (-CN) is electron withdrawing group,
The - O - is ether, electron donating group,
The amino (- N-) is amino group, electron donating group,
The RCOOR is ester, electron withdrawing group,
The - O - is ether, electron donating group,
Which are given in the following picture,
Identify the substituent groups on the alkenes below as electron withdrawing or electron donating by putting...
(1) indicate if the ring substituent is Electron Donating (EDG), Electron Withdrawing (EWG) or Neither (N): (11) rank them in order of their reactivity towards EAS (1 = fast........4 = slow) en T-Br -NO, NO2 TOCH; -OCH;
3. (2 points) Which of the following compounds have electron withdrawing (EWG) or electron donating groups (EDG)? Circle the positions that will be activated/deactivated?
3. (2 points) Which of the following compounds have electron withdrawing (EWG) or electron donating groups (EDG)? Circle the positions that will be activated/deactivated? NH2 NO₂
(2) Review of Substituent Effects: (a) For each benzylic carbocation below: (1) indicate if the substituents are Electron Donating (EDG). Electron Withdrawing (EWG) or Neither (N); and (11) rank these benzylic carbocations based on stability (1 -most stable and 4 - least stable) (b) For each structure below: (1) indicate if the ring substituent is Electron Donating (EDG), Electron Withdrawing (EWG) or Neither (N); (11) rank them in order of their reactivity towards EAS (1 -fast.....4-slow) a a a a
Classify each substituent as electron donating or electron withdrawing. Electron donating Electron withdrawing मन
what's the principles and of Electron-withdrawing groups and Electron-donating groups , why they give or accept electrons , especially in aromatic ring that act both donating and withdrawing? and please numerate members of each groups briefly?
For each of the following state if it is an electron withdrawing, electron donating, or halogen benzene substituent. a) acetanilide b) bromo benzene c) methyl benzoate d) Benzamide
5. Using what you determined in question 4, label each compound below as electron donating or electron withdrawing. (4 points) e Donating e Donating e Donating e Donating Circle one for or or or each substituent: e' Withdrawing e Withdrawing e Withdrawing e Withdrawing or z - HS: Draw curved arrows to produce the resonance structure below: Draw one resonance structure:
What roles do electron withdrawing groups and electron donating groups play? (i.e., do they activate the diene or dienophile?
1. For the following compounds, label each substituent as electron donating or electron withdrawing, and indicate whether this effect is achieved via induction or resonance. ŅO2 H2N SO3H 2. Predict the TH NMR of the above benzene derivatives. For chemical shift, indicate whether the peak would likely be downfield or upfield of benzene (7.2 ppm). (Hint: think about the resonance structures that can be drawn based on your responses from above) A B # of peaks chemical shift indicate: >7.2,...