E2 Alkyl halides: Br Bor Br Br Br BV Ban/NU: t-Buok, Nao Et NaH Write the mechanism for all combinations of reactions given in this handout (attached below). Include stereochemistry when possible. Write and
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If possible to draw mechanisms of each combo for just the first row of compounds
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- d) In any Friedel-Crafts alkylation reaction starting with benzene and using one equivalent of the alkylating reagent, there is a always a small amount of disubstituted product which is formed. By contrast, such outcomes are not typically observed for any halogenation reactions starting from benzene and similarly using EAS chemistry. Please explain the basis for this apparent dichotomy.Give detailed Solution with explanation needed..please explain....for a good review[References] Draw the expected major organic product of the Sharpless epoxidation of each allylic alcohol using (-)-diethyl tartrate as the chiral catalyst. (a) (b) All hydrogen atoms are implied. If a chiral atom is attached to a hydrogen atom, you should not show the hydrogen atom but use either a wedge or a dashed bond. Apply formal charges where appropriate. Omit lone pairs and radical electrons from your answer. • Omit + signs between structures. ● HO O HO -OCH3 کر ? ChemDoodle Previous Next
- Heterocyclic compounds plays an important role in our daily life. They are mainly used in pharmaceutical and agrochemical products to name a few. 3. It is required to introduce a halogen group to a five membered ring, thiophene. Discuss the reaction mechanism involved in the reaction by selecting a suitable halogen group and analyze why a particular substituted product obtained after the reaction is predominant over the other possible product(s) with the help of reactions.) For the two dienes shown, shade in the lobes of the four molecular orbitals (on the left) and then populate the appropriate orbitals with pi electrons. Next, in the middle diagram, shade in the lobes of the highest occupied molecular orbital that is used in part a) for thermal electrocyclization. Draw the expected product in the box and explain briefly, using terms such as conrotatory and/or disrotatory, why that particular stereoisomer is formed under thermal conditions. Repeat this process in part b) for the photolytic situation. 8888 a) b) CH3 CH3 8888 Energy 8888 - CH3 8888 8888 CH3 8888 Energy 8888 | | | | | | I 88 вон 8 H₂C 88 дона H₂C 2 A hvDraw the frontier orbitals for the thermal and photochemical cycloreversion of this reaction
- (a) Recall, from WP 14.26 (and from lecture), cyclopentadienone and cycloheptatrienone differ drastically in reactivity and stability. One is very stable and unreactive, and the other one is very reactive and rapidly undergoes a dimerization reaction. Which one is particularly stable? Explain why. For the one which is extremely reactive, explain why, but also draw the structure of the dimer which is formed rapidly.Give detailed mechanism Solution with explanation needed....don't give Handwritten answer1. Which of the following molecules reacts faster with NBS? Explain using mechanistic reasoning with reference to Hammond's postulate. Illustrate your answer with appropriate intermediate structures.