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Draw the mechanism of friedel-crafts acylation using acetyl chloride of m-Xylene
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- Draw a stepwise mechanism for the following reactions, two steps in R. B. Woodward’s classic synthesis of reserpine in 1958. Reserpine, which is isolated from the extracts of the Indian snakeroot Rauwola serpentina Benth, was used at one time to manage mild hypertension associated with anxiety.Draw a stepwise mechanism for the following reactions, two steps in R. B. Woodward’s classic synthesis of reserpine in 1958. Reserpine, which is isolated from the extracts of the Indian snakeroot Rauwolfia serpentina Benth, was used at one time to manage mild hypertension associated with anxiety.(a) Draw a stepwise mechanism for the reaction of ethyl hexa-2,4-dienoate with diethyl oxalate in the presence of base. (b) How does your mechanism explain why a new carbon–carbon bond forms on C6? (c) Why is this reaction an example of a crossed Claisen reaction?
- (R)-Carvone, the major component of the oil of spearmint, undergoes acid-catalyzed isomerization to carvacrol, a major component of the oil of thyme. Draw a stepwise mechanism and explain why this isomerization occurs.Coumarin, a naturally occurring compound isolated from lavender, sweet clover, and tonka bean, is made in the laboratory from o-hydroxybenzaldehyde by the reaction depicted below. Draw a stepwise mechanism for this reaction. Coumarin derivatives are useful synthetic anticoagulants.Nicotinic acid, more commonly named niacin, is one of the B vitamins. Show how nicotinic acid can be converted to (a) ethyl nicotinate and then to (b) nicotinamide.
- Lexan can also be prepared by the acid-catalyzed reaction of diphenyl carbonate with bisphenol A. Draw a stepwise mechanism for this process.Explain, by using words and structures, why when aniline is added to acetic anhydride and AlCl3 there is no product formed from a Friedel-Crafts reaction.Rank the following carbonyl compounds in order of increasing reactivity in nucleophilic substitution reactions:
- Wittig synthesis of the compound below involve using: 1)cyclohexanone and ethyl bromideDraw a stepwise mechanism for the following reaction of a Grignard reagent with a cyclic amide.Which of the following reactions describes why Acetic Anhyhdride needs to stay dry in order for it to be used in a Freidel Crafts Acylation? A + H20 H;C он H3C CH3 OH B + H20 H3C C .CH3 H;C CH3 + H20 H3C both A and B are side reactions that can scavenge water
