4. Propose a synthesis scheme for the amine shown below using the starting material indicated. No mechanisms (electron flow arrows, etc.) are needed! (More than one reaction will be needed to make this amine.) Make: From: NH, and other reagents/reactants
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- Draw the major organic product of the Bronsted acid-base reaction between the compounds shown below. Include all lone pairs and charges as appropriate. Ignore any counterions. H H :O: :O: H 1 eq. base :O: H HAmidation Reactions Part A Learning Goal: To identify characteristics common to all amidation reactions, and to apply these generalities in drawing specific amidation reactants or products. Part B Amidation reactions are condensation reactions. In a condensation reaction, two molecules join with a new covalent bond, and this results from the removal of a small molecule such as a water molecule. The reactants in amidation are a carboxylic acid and an amine, and the products are an amide and a water molecule. The carboxylic acid reactant can be of any type. The amine can be simple ammonia (NH₂). a primary amine. or a secondary amine. It cannot be a tertiary amine because tertiary amines lack the N-H Aspartame, an amide, is the sweetener commonly used in diet cola. COOH CH2 < 33 of 38 Review | Constants | Periodic Table CH2 O H₂N CH C NH-CH-COOCH3 7 H 2D EXP. CONT. aspartame Draw the carboxylic acid that is a reactant in the production of aspartame. Draw the molecule on the canvas by…ethylamine NABH,CN One problem with reductive amination as a method of amine synthesis, is that by-products are sometimes obtained. For example, reductive zmination of benzaldehyde with ethylamine leads to the expected product, N-ethylbenzylamine However, significant amounts of N-methyldibenzylamine are also recovered. Draw curved arrows to show the movement of electrons in this step of the reaction mechanism leading to the by-product. Arrow-pushing Instructions H-A OH `H NH2 :A CH3 `CH3
- C) a nitrile D) an amine nitrite salt DIRECTIONS: Each of the following questions or incomplete statements below is followed by four suggested answers lettered A - D. Select or choose the letters of the best answer to the question or incomplete statement. 7. An organic nitrogen compound, X, gives ammonia on warming with dilute aqueous sodium hydroxide, X could be A) ethanamide B) ethylamine C) phenylamine D) amino ethanoic acid Which one of the following reagents reacts 1. in a similar fashion with both phenylamine (C H,NH,) and ethylamine. A) Br,(aq) C) conc. HNO, D) cold HNO (aq) 2. Phenylamine (aniline) can be prepared by reducing nitrobenzene with tin and concerntrated hydrochloric acid followed by the addition of alkali and finally steam distillation. The alkali is added to; A) prevent oxidation of phenylamine. B) liberate free phenylamine from solution C) dissolve excess nitro benzene D) dissolve the phenylamine 8. Arrange the following molecules in their increasing order of base…Complete the following proposed acid–base reactions, and predict whether the reactants or products are favored.a) What are the difficulties with the following reaction to synthesize an amine. + HBr Br + NH3 NH2 b) Show a possible alternatives to this synthesis.
- a) For the following three isomeric amines (primary, secondary, tertiary) draw the structure in the right hand boxes that represent the most basic amine and the most nucleophilic amine. NH₂ primary amine secondary amine tertiary amine most basic? most nucleophilic?Draw the organic product of the Bronsted acid-base reaction between the compounds shown below. Include all lone pairs and charges as appropriate. Ignore any counterions. •H :F: :O: :O: H Na Ⓒ 0:0- HAmine Synthesis I Prepare the following compounds from any simple alcohol containing four carbons or less, benzene, toluene, and/or cyclohexane. Be sure to show all steps, reagents used, etc. 1. NH2 3. 5. NH2 2. NH2 4. * 6. NH2 NH2
- Draw the organic product of the Bronsted acid-base reaction between the compounds shown below. Include all lone pairs and charges as appropriate. Ignore any counterions. :O: ( H HWhat steps would be used to synthesize an organic amine?Methamphetamine is a long-lasting, potent stimulant sold as a street drug. The synthesis is quite simple and one step in the synthesis is shown below. Using your knowledge of the reactions of amines, provide all the reagents necessary to complete the reaction below. Provide the reagents for step 1 and step 2 ,