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- Which of the following reactions does NOT lead to the carbonyl product shown? ii oia ..i ci Я осно وه مره NH₂ OH + + + H₂O HO HCI A HCI CI OH loDraw the mechanism from benzaldehyde to this compound. Reactants: i) NaBH4 ii)PBr31. Draw mechanisms to show how the following a,ß-unsaturated ketone could be made from benzaldehyde (PhCHO) as one of the reactants using: (i) an aldol reaction (ii) a Wittig reaction, including preparation of the ylid. Ph Ph
- How does the synthesis of these two reagents work?The Stork reaction is a condensation reaction between an enamine donor and an a,ß-unsaturated carbonyl acceptor. The overall reaction consists of a three-step sequence of 1. formation of an enamine from a ketone, 2. Michael addition to an a,ß-unsaturated carbonyl compound, and 3. hydrolysis of the enamine in dilute acid to regenerate the ketone. Consider the Stork reaction between acetophenone and propenal. 1 Draw the structure of the product of the enamine formed between acetophenone and morpholine. 90-85 ?1) How might you convert geraniol into either ethyl geranylacetate or geranylacetone? Geraniol CH₂OH CO₂Et Ethyl geranylacetate the Geranylacetone
- provide a mechanism which explains the following conversion OH ist NaOH H₂OFor the following reaction schemes, fill in the appropriate reagents and starting materials you would use to transform the acetoacetic ester and acetone into nabumetone, an NSAID drug used for arthritis and joint pain. Write the correct reagents/reactants next to the number of steps for each transformation.During the acid catalyzed conversion of an aldehyde to a hemiacetal the acid reacts with the alsehyde to form a more elecrtophilic intermediate. What is the name of this intermediate?
- The following molecule can be formed via an intramolecular aldol addition reaction. Draw the organic starting material needed to form the given B-hydroxycarbonyl compound. organic starting material B-hydroxycarbonyl NaOH OHThe ketone whose 1H NMR spectrum is shown here was obtained as the product of an acetoacetic ester synthesis. What alkyl halide was used in the synthesis?What is the structural requirement of the following reactions? 1) Iodoform Reaction 2) Aldol Condensation