PROBLEM What alkyl halides would you use to prepare the following ketones by an acetoacetic ester 22-13 synthesis? (a) (b) CHśćRCH CH3CHCH2CH2CCH3 CH2CH2CH2CCH3
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- Propose an efficient synthesis for each of the following transformations он OMe O;N.18en the folbwng sequence of reac ond what wo structure of compound AT D (CH,,CULI 2) H,0 HN-CH, H,0 Select one 2.Wnchufthfollewine.comectly represert eet the stepm the rechnsnetamad altalcardensation reactProvide the mechanism for this reaction (include arrow pushing) ОН 2-lodobenzoic acid K2S2O8 H2SO4 ОН OSO3H ОН 양 diphenyliodonium-2-Carboxylate benzyne
- What is the reactant that would give the following Aldol Condensation product? 01 0 | 0 ||| O IV OV H H تبار نہید لبد بد مبد IV :O: ة :0: :0: :O:Mustard gas, Cl¬CH2CH2¬S¬CH2CH2¬Cl, was used as a poisonous chemical agentin World War I. Mustard gas is much more toxic than a typical primary alkyl chloride. Itstoxicity stems from its ability to alkylate amino groups on important metabolic enzymes,rendering the enzymes inactive.(a) Propose a mechanism to explain why mustard gas is an exceptionally potent alkylatingagent3) Propose a mechanism for the following reaction. HO H2SO4
- Show how each transformation may be accomplished by using a nitrile as an intermediate. You may use any necessary reagents.(a) hexan@1@ol S heptan@1@amine(b) cyclohexanecarboxamide S cyclohexyl ethyl ketone(c) octan@1@ol S decan@2@one16) What product will be formed if the following is treated with excess PhMgBr in Et2O (assuming a normal workup)? Ph OH Ph OH OH PhThe Stork reaction is a condensation reaction between an enamine donor and an α,β-unsaturated carbonyl acceptor. The overall reaction consists of a three-step sequence of formation of an enamine from a ketone, Michael addition to an α,β-unsaturated carbonyl compound, and hydrolysis of the enamine in dilute acid to regenerate the ketone. Consider the Stork reaction between cyclohexanone and propenal Draw the structure of the product of the enamine formed between cyclohexanone and dimethylamine. - Michael addition to an α,β-unsaturated carbonyl compound, and - hydrolysis of the enamine in dilute acid to regenerate the ketone.
- Please provide the starting materials that are needed to produce the following enamine thru a hydrolysis mechanism?Draw a plausible mechanism for the following transformation H₂O* Z-I HWhen a methyl ester is hydrolyzed under acidic conditions in H,180, the 180 isotope ends up in the carboxylic acid. When a tert-butyl ester is hydrolyzed under the same conditions, the labeled oxygen ends up in the alcohol product. (a) Propose mechanisms to account for these observations. (b) Explain why each ester undergoes the respective mechanism. CH3 + Но-СНЗ 18 + H180 H ОН