2. Draw the mechanism and product for the following elimination. (2 points) KOtBu
Ans! 79. Draw the mechanism and product for the following elimination. ОН conc. H2SO4 heat Ans: 81. Draw the mechanism and product for the following elimination. Br KOtBu 88. Is the following more likely a nucleophile or a base? YNY Ans: 90. Which of the following is the strongest nucleophile? = =0 MeOH Meo B. U. ODD. A. Ans:
Give the product of the bimolecular elimination from each of the following isomeric halogenated compounds. KOtBu +HOtBu +Br Br H CH3 One of these compounds undergoes elimination 50x faster than the other. Which one and why? (scroll down A because the conformation needed for elimination places the phenyl groups anti to each other.
16. Draw the mechanism and product for the following elimination. OH conc. H2SO4 heat
Complete the curved arrow electron-pushing mechanism of the following E2 elimination of 3-bromopentane and draw the structure of the organic product formed. Use three curved arrows to show the conversion to the product. Draw the organic product of the E2 elimination of the 2-bromopentane.
Complete the curved arrow electron-pushing mechanism or the following E2 elimination of 3-bromopentane and draw the structure of the organic product formed. Use three curved arrows to show the conversion to the product. Draw the organic product of the E2 elimination of the 2-bromoperitane.
Complete the curved arrow electron-pushing mechanism of the following E2 elimination of 3-bromopentane and draw the structure of the organic product formed. Complete the curved arrow electron-pushing mechanism of the following E2 elimination of 3-bromopentane and draw the structure of the organic product formed.
4. For each of the following elimination reactions (a-c): (15 points) (a) State which elimination mechanism would predominate; briefly explain your choice. (b) Show the mechanism leading to the major elimination product. (a) ОН SNa (b) Br Br NH2 . (c)
(2 points) When the alcohol below is treated with and pyridine, the expected elimination product is formed. However, when the same alcohol is treated with, the elimination product is 1,2-dimethylcyclopentene. Propose a mechanism for each pathway to account for these differences 1. POC3 pyridine OH SO4 2. Predict the mechanism for the following conversion (2 points) Hgo
Predict the product when 3,7-diacetyl-N-ethyl phenothiazine is treated with KOtBu (2 equivalents) and methyl benzoate (2 equivalents). Show the mechanism for formation of the predicted product.
Draw the mechanism that explains the product of the following reaction 11. (10 points) Draw the mechanism that explains the product of the following reaction: Brz H.O HO, Me Br + ent.