The first step in the mechanism for the reaction of an amine with a carboxylic acid to produce an amide is: A) N2 loss B) an acid-base reaction C) loss of C02 D) a nucleophilic attack on the carbonyl carbon E) loss of H20
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- How to Identify the Acetylide Anion and Epoxide Needed to Synthesize an Alcohol ?draw the following d) butylbutanoatee) 3-chloropentanoic acid f) 2,2-dibromo-butanalg) 2-octanolh) 1-propynei) butylethylmethylamine j) butylpropyletherWhen a carboxylic acid is dissolved in isotopically labeled water, the label rapidly becomes incorporated into both oxygen atoms of the carboxylic acid. Explain.
- Thioglycolic acid, HSCH2CO2H, a substance used in depilatory agents (hair removers) has pKa = 3.42. What is the percent dissociation of thioglycolic acid in a buffer solution at pH = 3.0?As far back as the 16th century, South American Incas chewed the leaves of the coca bush, Erythroxylon coca, to combat fatigue. Chemical studies of Erythroxylon coca by Friedrich Wöhler in 1862 resulted in the discovery of cocaine, C17H21NO4, as the active component. Basic hydrolysis of cocaine leads to methanol, benzoic acid, and another compound called ecgonine, C9H15NO3. Oxidation of ecgonine with CrO3 yields a keto acid that readily loses CO2 on heating, giving tropinone. (a) What is a likely structure for the keto acid? (b) What is a likely structure for ecgonine, neglecting stereochemistry? (c) What is a likely structure for cocaine, neglecting stereochemistry?Methylparaben is a common preservative used in cosmetics. What carboxylic acid and alcohol are needed to synthesize methylparaben by Fischer esterifi cation?
- Etoposide, sold as a phosphate derivative with the trade name ofEtopophos, is used for the treatment of lung cancer, testicular cancer,and lymphomas. What products are formed when all of the acetals are hydrolyzed with aqueous acid?Reductive amination requires a hydrogen on the carbonyl carbon to proceed BECAUSE Reductive amination converts only aldehydes to amines(b) Draw a stepwise mechanism for the following transformation from A to B. This reaction is one of the key steps in a synthesis of lysergic acid diethyl amide (aka LSD). CI A CH ₂ AIC13 B CH₂ several steps away from lysergic acid diethyl amide (LSD)
- Draw the struetre of the following three isomeic amides with chemical feruula CHNO. Amide #1: (E)-N,N-dimethyl-2-butenamide Amide #2: (7)-N-methyl-3-pentenamide Amide #3: (7)-3-hexenamide C'onsider Z sterenchemistry of alkenes. • Draw one structure per sketcher. Add additional sketchers asing the drop-down memu in the hottom right comer. Sepamte structares with - signs from the drop-down mena. O00. IF ChemDoodle ChemDoodie ChemDoodle just the first one is what I could really use help on Amide #1: (E)-N,N-dimethyl-2-butenamideWhat carboxylic acid and amine are needed to synthesize the pain reliever phenacetin? Phenacetin was once a component of the over-the-counter pain reliever APC (aspirin, phenacetin, caffeine), but it is no longer used because of its kidney toxicity.Draw the products formed when each carbonyl compound reacts with the following amines: (1] CH,CH,CH,NH2; [2] (CH3CH2)NH. cOCI 요요 b. .C. CH a. CH3