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- Do the same for 1,3-cyclobutanedicarboxylic acid. Draw tetrahedral representations of the two enantiomers of the amino acid cysteine, HSCH2CH(NH2)CO2H, and identify each as R or S. 5-63 The naturally ocurrng Torm oTthe a acid. cvetei rem 5-63)Identify which product corresponds to each number 1-4. OH Mes 1 OTS A OTS B {{ D TsCl imidazole Br S 8 E F LL F KBr DMF PMes DMF DMF H PMes "PMes PMey K PMeThe spec (а) НО (b) HỌ rine, sho specific 15-28 What is он opticall polarize (c) (d) 15-24 Label all stereocenters in each molecule with an asterisk. How many stereoisomers are possible for each molecule? Section 15-4 Is Chirality C 15-29 Answe OH CH,COOH (a) If a an (a) СН,СНCНСООН (b) CHCOOH de Он HO-CHCOOH (b) А (c) Al (d) PlL vi OH Chemical Co (c) (d) 15-30 (Cher say t. be op polar 15-31 (Che drug 15-25 Label all stereocenters in each molecule with an asterisk. How many stereoisomers are possible for each molecule? synt. the c are OH form sin c (a) (b) usec OH chir each Сар ture (c) OH (d)
- %T OH 2880cm-1 Which compound is shown on the IR? 2-methylheptan-4-ol A 2970cm-1 1720cm-1 cm-1 u 2-methylheptan-4-one B u 3-methylbutanal сA О А Ос ОВ OD Which of the following compounds is a meso compound? H H COOH CH3 ОН OH B HI НО COOH - он -H CH, С Н НО COOH H - он Н D но- НО COOH Е Н. Н COOHHow many stereoisomers does the following compound have? CH3CHCICH₂CHCICH 3 Select one: Ο Α. Ο OB. 1 OC. 2 OD. 3 OE. 4
- Cyclopentanecarboxylic acid and 4-hydroxycyclohexanone have the same formula (C6H10O2), and both contain an —OH and a C=O group. How could you distinguish between them using IR spectroscopy?Isoleucine, another of the twenty amino acids found in proteins, is metabolized by a pathway that includes the following step. Propose a mechanism.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?
- lo CI H3C H3C 07 ↔X + :0: OH Dimethylaminopyridine (DMAP) is often used as a catalyst in esterification reactions. A basic solvent such as triethylamine is used to react with the liberated proton from the alcohol group. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions CI NMe₂ N(CH₂CH3)3 CH3 6--10-- NMe2d) CH3 Joonam OCH₂CH3 H₂O₂ NaOH / CH3OH - H₂O NaOCH₂CH3 (1 eq) 2) BrCH₂CO₂CH₂CH3 3) aq NaOH (4) ag HCI/ heatH CI HC H 1 Organic H CH H 51-C HUH нсн нсн H H 12 H H нс - с I HCH HU- IG - - нсн НО 1 С=0 IJ I H H H CH I cl H H С-С - СН H Naming HOH H HCH I нсн H - С - СТ Н I I H Pr ems land chiral carbon ID) HI І енз н CH3 H CH₂ и ho 21