5. Do the following compounds have any chirality centers? Which one is chiral? If has chirality,...
(d) Do the following compounds have any chirality centers? Which one is chiral? If has chirality, how many stereoisomer does it have? (a) Cis- 1,2-dimethylcyclobutane (b) Morphine N- CHI OH Y CU HU
Which of the compounds contain chiral centers? 1-bromobutane 2-bromobutane 1,2-dibromobutane 1,3-dibromobutane 1,4-dibromobutane 2,3-dibromobutane Chirality and Enantiomers
For the following compounds. Нас. CH3 CHн но C/ (a) Identify with asterisk any chirality centers in the molecules. (b) Rank each group on the chirality centers from high to low priority. (c) Determine whether the chirality center is R or S. Remember the lowest priority MUST be oriented in the back.
2. Star (*) the chirality centers (if any) in the following molecules. See McMurry, secs. 5-1&5-2 and chap. 5 PPT slides 7-9. Note: sp' and sp carbons cannot be chiral centers. -CH-CH.CH (a) CH,CHCOH NH, (e) CICHCHCH,OH CH, CH (d) HOCH CH,OH
How many enantiomers can a choral stereoisomer have
How many enantiomers can a chiral stereoisomer have? Select one: a. 0 b. 1 c. 2 d. The number of enantiomers depends on the number of chirality centers.
3.14 Which compounds contain chiral centers? (a) 2-Chloropentane (b) 3-Chloropentane (c) 3-Chloro-1-pentene (d) 1,2-Dichloropropane 3.18 Mark each chiral center in the following molecules with an asterisk. How many stereo isomers are possible for each molecule? CH COOH CH 0 (a) CH CCH=CH, (b) HCOH (c) CH,CHCHCOOH (d) CH,CCH.CH OH CH NH CH,OH OH CH,COOH (e) HCOH () CHCH.CHCHECH, (g) HOCCOOH CH,OH CH,COOH
How many chiral centers are there in the following molecule (the naturally occurring stereoisomer is camphor, a pungent moth repellent)? HO 10 CCH OH HO HzC H3C -CH3 F betamethasone 6 5 8 9 What type of carbocation is shown? primary secondary tertiary quaternary Question 28
12. Erythronolide B is the biological precursor of erythromycin, a broad-spel antibiotic. How many chirality centers does erythronolide B have? H-C A CH, нсон CH / O HC H30H ***OH CHE Erythronolide B a. 8 b.9 c. 10 d. 11 13. Consider the two methyl groups indicated with letters in the following molecular model. These two groups are: a. A: axial B: axial b. A: axial B: equatorial c. A: equatorial B: axiald. A: equatorial B: equatorial 14. Which of...
Which of the following is the definition of chiral a. The b. The c. A molecule that has a carbon atom with d. A molecule with a mirror image e non-superposability of anbject ono orimage its m superposability of an object on isi bility of an object on its mirror different e with na aro Il that has a carbon atom with four d. A molecule with a mirror image a carbon atom with four different s. Which of the...
in the following molecules identify the chiral atom(s) if any: CI CH Br i. HOOC iv. CHCIF-CF O-CF2H 5b.6pts. Draw the following structures and label any chirality centers a. 2,4-dimethyl heptane b. 1,3-dichlorocyclohexane 5e.3pts. Draw an alcohol which is chiral and has four carbons. 5d. 4pts. convert the following structure to Fisher projection CH3 Cl