i started this problem but i need help! Acid catalyzed hydrolysis (12 pts)
Carboxylic acid esters can undergo acid catalyzed hydrolysis, neutral hydrolysis and base catalyzed hydrolysis. Below is a table with three structurally related carboxylic acid esters and the second order reaction rate constants for the acid-catalyzed mechanism (k_A) and the rate constant for the base-catalyzed mechanism (k_B). The difference between the three compounds is mainly the substitution of hydrogen atoms on R_1 with the more electronegative chlorine atoms. a) Explain why there is only a small change in k_A for the...
Problem 8. The complete mechanism of acid-catalyzed hydrolysis of amides is asked here! [6 P) No arrows necessary. Only I limiting resonance structure, only 1 species per box. For your help, it is indicated in each step which particle is added or removed (in the forward direction). I II H* O + H H2O + Me N Ph Me Amide IV V H VI this goes off, but takes up Va proton H* a Ph OH H* Problem 8. The...
(8 pts) 4. Provide a reasonable, detailed, stepwise mechanism for the acid-catalyzed hydrolysis of the following. Include appropriate resonance structures. (Hint: consider the CEO to CoN mechanism.)
I need help for organic chemistry Acid Catalyzed Dimerization of 2-Methylpropene
Propose a mechanism for the acid catalyzed hydrolysis of the following imine.
Which of the following species is present in the acid-catalyzed hydrolysis of tert-butyl acetate, but not in the acid-catalyzed hydrolysis of methyl acetate? tert-butanol tert-butyl radical tert-butyl carbocation tert-butyl carbanion
Which alkene undergoes acid-catalyzed hydrolysis to gives a racemate? H3CH O b) o I and II 011 O None
7. The reaction sh own below illustrates the acid-catalyzed hydrolysis of an acetal into a hemiacetal. H3o* NH Draw the complete arrow pushing mechanism that accounts for products shown above. (8 pts)
Hydrolysis of Polyethylene Terephthalate Although you used a base-catalyzed procedure for this hydrolysis, acid catalysis also works well (as discussed in the text above). Draw a complete step-by-step mechanism showing how acid catalysis would promote the reaction. Would a work-up be required after hydrolysis? If so, provide a proposed work-up.
An amino acid A, isolated from the acid-catalyzed hydrolysis of a peptide antibiotic, gave a positive ninhydrin test and had a specific optical rotation (HCl solution) of 37.5 mL/(g