Propose a retrosynthetic analysis of benzocaine from the starting material shown. Your answer should include both the synthons and the reagents that would be employed in the actual synthesis. H2N
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- Following is a synthesis for toremifene, a nonsteroidal estrogen antagonist whose structure is closely related to that of tamoxifen. (a) This synthesis makes use of two blocking groups, the benzyl (Bn) group and the tetrahydropyranyl (THP) group. Draw a structural formula of each group and describe the experimental conditions under which it is attached and removed. (b) Discuss the chemical logic behind the use of each blocking group in this synthesis. (c) Propose a mechanism for the conversion of D to E. (d) Propose a mechanism for the conversion of F to toremifene. (e) Is toremifene chiral? If so, which of the possible stereoisomers are formed in this synthesis?Propose a synthesis of the topical anesthetic cyclomethycaine from 4-hydroxybenzoic acid, 2-methylpiperidine, and any other necessary reagents. HN' + HO. НО Cyclomethycaine 4-Hydroxybenzoic acid 2-MethylpiperidineReaction of p-nitroaniline with sodium nitrite and hydrochloric acid at 0°C, followed by treatment with N,N-diethylaniline.
- The mechanism for acidic hydrolysis of a nitrile resembles the basic hydrolysis, exceptthat the nitrile is first protonated, activating it toward attack by a weak nucleophile (water).Under acidic conditions, the proton transfer (tautomerism) involves protonation on nitrogen followed by deprotonation on oxygen. Propose a mechanism for the acid-catalyzedhydrolysis of benzonitrile to benzamide.Reaction of p-nitroaniline with sodium nitrite and hydrochloric acid at 0 °C, followed by treatment with N,N-diethylaniline.The following compound used in perfumery has a violet-like scent. Propose a synthesis of this compound from benzene. 4-Isopropylacetophenone
- Phenyl 4-aminosalicylate is a drug used in the treatment of tuberculosis. Propose a synthetic route for this compound starting from 4-nitrosalicylic acid. The synthesis involves multiple steps. Specify all the reagents and the reaction conditions it may require in each step.The following set of reactions convert phenylacetylene to butylbenzene. Give the appropriate reagents for each step of the following reaction sequence.Acetic acid has been mixed with isoamyl alcohol to produce isoamyl acetate giving off a banana smell. Propose a reaction mechanism for this reaction.
- Provide the necessary reagents to accomplish the desired organic reactions NH HN HO.Propose a synthesis of the following molecule, starting with cyclohexanone and using any other reagents necessary:Complete the statements by providing the reagents necessary to complete each step of the synthesis. Ketone reacted with CO₂H and then yielded a derivative, which was treated with 1) (i) C6H5MgBr (ii) H3O+ 2) (i) DIBAL-H (ii). H3O+ 3) Sia2BH,H202, NaOH 4) CH2N2 (diazamethane) CO₂C2H5 5) PCC (an oxidant) 6) H2SO4, H2O, heat 7) HgSO4/ H2SO4 8) C₂H5OH, H3O*, heat TABLE OF REAGENTS to form an unsaturated carboxylic acid, treatment with to yield unsaturated aldehyde as the final product. CHO MacBook Air 9) C6H5 CH2 P(C6H5)3; NaOH 10) PCC (an oxidant) 11) NaCN, H₂SO4 12) PhCH2CHO, H3O*