Priority of Back (B) gr. according to Sequence Rule | Clockwise path among the other 3 grs. | Anti-Clockwise path among the other 3 grs. |
4 Lowest priority | Configuration R | Configuration S |
3 Third Priority | Configuration S | Configuration R |
2 second priority | Configuration R | Configuration S |
1 first priority | Configuration S | Configuration R |
So, the answer is option A) only I is an S enantiomer
14. Which of the following chiral compounds is(are) S enantiomer(s)? I. OH Hac H3C OH H3C...
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)...
Q1. Give R and S configuration to the following compounds (5 Marks) C2H5 i) H3C-C-H OH C2H5 ii) H2N-C-CH2-CH2-CH3 H ОН iii) H CH2-CH2-CI iv) HO-H2C-H2C-C-CH2-CH2-CH3 1 Н. C/ H2C H-C-CH3 CH2
H3C Which alkene(s) shown below is an "E" stereoisomer? HC CH; ci Ci =C C=C H C1 H H II CH; CH; CH; III a. I only b. II only c. III only d. I and II e. I and III f. II and III g. All of the above h. None of the above
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1. Identify the configuration of each chiral center in the following compounds. Draw the enantiomer for each of the following compounds. OH Br b) HO H c) *** 4 Name CHEM 2200-Summer 2020 OH d) OCH e) -OH CI
| | | 14. Which of the following compounds is conjugated? Yoo 2attach A. I and III B. II and III S II and IV II, III and IV oops forg 15. Which of the following conjugated dienes represent two conformations? A Only I and II Only I and III C. Only II and III D. None of the choices my
7. Which one of the following compounds is an alcohol? A) OH HC — -сна OI B) H2 H3C- C-CH C) H2 — -CH3 H3C — СС H D) H3C-C E) H3CSH HA H2 -CH3
1.) Which of the following compounds is chiral?
A.
1-chloropentane
B.
1,1-dichloropentane
C.
2-chloropentane
D.
2,2-dichloropentane
E.
none of these
2.) Compounds I and III are:
A. enantiomers
B. diastereomers
C. structural isomers
D. geometric isomers
3.) The molecules shown are:
A.
constitutional isomers
B.
enantiomers
C.
diastereomers
D.
identical
E.
none of these
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Which of the following shown below represent a pair of enantiomers? CN (a) Br HAC-C-CN (b) CO2H HC-Br HC-CH? Br HC-CN CO2H (c) (d) CO2H CH3 он H -OH HC-CH2CH3 CH3CH H3C CH3 -CO2H H H2N H3C CH H2N 2 o
Which solvent(s) listed below would be satisfactory in Snl reactions? 0 o Н;С CH; DMSO H3C Н;С CH3CH2OH H DMF I II III a. I only b. II only c. III only d. I and II Oe. I and III f. II and III Og. All of the above What two products are expected in the following reaction? CH3 HBT H H BI CH CH; CH BI H Br I II III H Br Br H CH; CH IV V...
2-chloro-6-isopropylcyclohexanone 9. Which of the following molecules contain one chiral carbon? oEif OH но NH но II IV V (a) I only (b) I and III (c) I, II, III, and V (d) I, II, IV, and V (e) all of them CHE120 RRC S19 E2sample