Question

Determine the stereochemistry for each amino acid, and then convert them to Fischer projection: 0: (a) 20. Is the hydroxyl group on tyrosine ortho, meta, or para to the a-carbon? Mechanisms 21. Provide a mechanism for the acid-catalyzed esterification of aspartic acid in n-propanol. 22. The amino group of an amino acid can be acylated using acetic anhydride. (a) Provide a mechanism for the acylation of alanine using this reagent. (b) Predict the products from the acylation of lysine.

Answer 1

if clackwise rotation then R configuration but fourth priority atom not above if above then R configuration convert S configuration

Page No. Expt. No. solution 19 @ 0.0 A SH3 chiral and s streoisomer Fischer projection ut chiral and INH R Streoisomer Fischer projection - Teacher's Signature :