(6) 16. Give structures for the following compounds: a) (R)-2-bromo-2-pentane b) (R.S)-2,3-dibromopentane (4) 17. Which of...
7. Which of the following structures represent meso compounds? c) 2,2- dibromopentane b) 2,3-Dibromopentane a) 2,3- Dichlorobutane Н. н Н CI CH Н Н g) Br CH Н Br CH
(2) 22. Of the following, which has the highest boiling point? b) CH, CH, CH, CH CH. CH CH CH OCHCH, CH, CH, CH, CH, CH, OH (4) 18. (R)-(+)-Glyceraldehyde: H нонсон A: is levorotatory. B: rotates plane-polarized light in a counterclockwise direction. C: rotates plane-polarized light in a clockwise direction. D: is racemic. (10) 19. Assign R, S configurations to each indicated stereogenic center in the molecules below. OH HOH HOHC NH lol norepinephrine CHO FORE trans-cyclopentane-1,2-diol COOH +05...
29 Give the configurations, respectively, of the following two molecules. CH HO H and CI A. B. C. R and R R and S S and S D. S and R 30 Give the configurations, reypectively, of the folowing two molecules H CH CHy A. B. C. R and R R and S Sand S D. S and R Which one of the following groups has the highest rank as assigned by the Cahn- Ingold-Prelog system for stereogenic (chiral) carbons?...
age 7 19. The reaction of CH, CH, CCH, CH, with H,/Ni forms a. pentane. b. one particular chiral pentanol. c. an equimolecular mixture of two chiral pentanols . d. one achiral pentanol. e. no product. 20. The p-orbital of a methyl radical carbon, CH,, Contains how many electrons? a. 1 b. 2 e. 3 d. 4 e. 0 21. (2R, 35)-2,3-Dichlorobutane and (25, 3R) -2,3-dichlorobutane are: a. enantiomers b. diastereomers e. identical d. conformational isomers e. constitutional isomers 22....
4. Draw structures for the following compounds (12 points): a. 6,6-dimethylhept-2-yne b. 5-amino-4-methoxyhept-6-yn-2-ol c. 4-bromo-4-methyl-2-cyclohexenol d. (S)-2-chlorohexane e. (2S,3S)-2,3-butanediol f. (R)-3-bromocyclopentene
Which of the following chiral compounds is(are) R enantiomer(s)? 1) I. II III но, CI. Н,с CH CI OH н,с 2) You found an organic compound containing chiral carbon atom with the following four substituents: HC C-, CI-, O C- and H2C-CH-, What would be the correct order of their priorities? A) HC C-> O-C->CI-> H2C-CH B) Cl->HCC-> 0-C-> H2C-CH C) Cl-> O C-> HC C-> H2C-CH D) Cl-> O-C-> H2C-CH-> HC C E) O-C-> Cl-> HC C-> H2C-CH 3)...
A. two B. four C. six D. eight 15. Which one of the following compounds has highest boiling point? I. CH3CH2CH3 II. CH3CH2OH III. CHOCH A. I B . II C. III 16. What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? A complete inversion of configuration takes place at the chirality center B. incomplete and varying inversion of configuration takes place at the chirality center C. the chirality center retains its configuration D....
A. two B.four 15. Which one of the following compounds has highest boiling point? 1. CH3CH2CH3 II. CH3CH2OH III. CH3OCH3 C. six D. eight AI B. II CINI 16. What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? A. complete inversion of configuration takes place at the chirality center B. incomplete and varying inversion of configuration takes place at the chirality center C. the chirality center retains its configuration D. the molecule loses its...
In the lab, Cassandra the Chemist™ studied the reaction between 2-bromo-3-methyl pentane with a base under the presence of heat. During her studies, she found that the reaction rate doubled when she doubled the amount of the base. Draw a full, arrow-pushing, mechanism of the above reaction showing the most prevalent product formed. 11. (22 pts) In the lab, Cassandra the Chemist"M pentane with a base under the presence of heat. During her studies, she found that the reaction studied...
A. aldehyde A. two 15. W B. ketones C. carboxylic acids D. esters 7. How many stereoisomers of 24-pentanediol are possible? HO D. 6 A. 2 B.3 C. 4 8. Which one of the following is a diastereomer of 2R 3R)-2,3-dibromopentane? B. (25,3R)-2,3-dibromopentane D. (2R, 4R)-2,4-dibromopentane A. (2S,3S)-2,3-dibromopentane C. R-1,2-dibromopentane y. Which one of the following groups has the highest rank as assigned by the Cahn-Ingold Prelog system for stereogenic carbons? A. -CH=CH2 B. -CH2OH C. -CH=0 D.-CH2SH 10. Which...