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- Explain how benzaldehyde and dimedone reacts with each other, and then with the aminotriazole to form compound 1a in the presence of an acid catalyst. Provide a detailed reaction mechanism and explanation.Following are structural formulas for amphetamine and methamphetamine. H NH, CH3 (a) (b) Amphetamine (racemic) Methamphetamine (racemic) The major central nervous system effects of amphetamine and amphetamine-like drugs are locomotor stimulation, euphoria and excitement, stereotyped behavior, and anorexia. Show how each drug can be synthesized by reductive amination of an ap- propriate aldehyde or ketone and amine.How imines and enamines are converted back to carbonyl compounds by hydrolysis with mild acid ?
- Show how to synthesize the following amines from the indicated starting materials byacylation–reduction. b) N-benzylaniline from anilinehow to prepare phenylmethanamine from benzene ?Amobarbital is a sedative marketed under the trade name Amytal. Propose a synthesis of amobarbital, using diethyl malonate and urea as two of the starting materials.
- Show how to synthesize the following amines from the indicated starting materials below. Each of the final products may require several sequential steps. Draw the structure for each of the steps and show the reagents required. Starting material Final product b) Benzene m-bromoaniline c) ethylbenzene p-ethylaniline + o-ethylaniline d) benzene p-bromoaniline + o-bromoanilineProvide the steps to convert the following aldehyde to the given amine product.Barbiturates are prepared by treatment of diethyl malonate or a derivative of diethyl malonate with urea in the presence of sodium ethoxide as a catalyst. Following is an equation for the preparation of barbital, a long-duration hypnotic and sedative, from diethyl diethylmalonate an urea. Barbital is prescribed under one of a dozen or more trade names. Propose a mechanism for This reaction The pKa of barbital is 7.4. Which is the most acidic hydrogen in this molecule and how do you account for its acidity?
- Reaction of p-nitroaniline with sodium nitrite and hydrochloric acid at 0°C, followed by treatment with N,N-diethylaniline.The two most general amine syntheses are the reductive amination of carbonyl compounds and the reduction of amides.Show how these techniques can be used to accomplish the following syntheses.(a) benzoic acid S benzylamine (b) benzaldehyde S benzylamine(c) pyrrolidine S N@ethylpyrrolidine (d) cyclohexanone S N@cyclohexylpyrrolidine(e) HOOC¬(CH2)3 ¬COOH S pentane@1,5@diamine (cadaverine)1) Draw AND name the product that would result upon treatment of R-3-methylheptanal with Excess aqueous sodium hydroxide together with excess chlorine. 2) Draw AND name the product that would result upon treatment of R-3-methylheptanal with Bromine in acetic acid. 3) Draw the product that would result upon treatment of R-3-methylheptanal with1-butanamine using a Dean Stark trap. Draw the product and then react the product with lithium aluminum hydride followed by hydrochloric acid. Give a complete mechanism. 4) Draw the product that would result upon treatment of R-3-methylheptanal with Disopropyl amine using a Dean Stark trap. Draw the product and then react the product with hydrogen gas in the presence of a platinum catalyst.