7. Which of the following structures represent meso compounds? c) 2,2- dibromopentane b) 2,3-Dibromopentane a) 2,3-...
What are the meso compounds of the following compounds and explain the reason? 1) 2,3-dimethylbutane 2) 2,3-dichlorobutane 3) 2,4-dibromopentane 4) 3,4-dimethylhexane 5) 1,2-dimethylcyclopentane
(6) 16. Give structures for the following compounds: a) (R)-2-bromo-2-pentane b) (R.S)-2,3-dibromopentane (4) 17. Which of the following is chiral? Why or why not? CH HC CH "Br
which is a meso compound?
Which is a meso compound? O A. (20.4R)-2,4-Dibromopentane O B. (2R,3R)-2,3-Dibromobutane O C. (2R.45)-2,4-Dibromopentane O D.(2R,3S)-2,3-Dibromopentane O E. (2R.45)-2,4-Dibromohexane
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....
12 The IUPAC name for the following compound is (circle your choice): (i)(2S, 3S)-2,3-dibromopentane (ii) (2R, 3R)-2,3-dibromopentane CH (iii) (2R, 3S)-2,3-dibromopentane Br - H (iv)(2S, 3S)-2,3-dibromobutane H + Br 13 CH.CH Provide IUPAC names for the followmg compounds. Include trans or cis, E or Z to stereochemistry.
Are the following compounds chiral, achiral or meso?
b. Please state whether compounds IV and V are chiral, achiral, or meso (6 pts). Ph F3 CH3 Нас. Ph Н Br CI H Br CF3 IV V
І ІСІ 3.31 Which of the following are meso compounds! Н Br Br, CH3 | HO CH, (b) (а) Br. C н / CH, -C C-C Н / CH Br VOH CH, ОН НО CH,OH н-ОН SCH, (е) -ОН " НОН CH,OH ОН CHO ОН CH,OH HOH CH,OH ОН (h) нтон HT ОН CH,OH нтон CH,OH CH,OH
19 R-2,3-dimethylhexane uestion 41 Which of the following compounds are meso? OH OH
9. Which of the following pairs of structures represent a pair of enantiomers HyC.. HCN Had BCH H₂ CH₂ C OH H, CH.CH соон H ! CHE соон H₂C....! н HNH 10. What is the relationship of the following two compounds? COOH HCI HCI and HC COOH ні он OH a. Constitutional isomers b. Diastereomers c. Identical d. Enantiomers 11. Name the following hydrocarbon. 295 a. 2,3-dimethylbutane b. hexane c. 1,2-dimethylbutane d. 2-methylpentane
Please answer all
(A) Enantiomers (B) Diastereomers (C Same Compound (D)Constitutional Isomers (E) meso-compound 5. Which Newman projection represents the most stable conformation of (CH)CHCHCH,)? HyC (A) 6 Which of the following energy diagrams shows a concerted endothermic reaction? 7. Identify the IV (E) V (A) (B) II (C III (D)IV 8. Which compound below has a meso form? A. 1,22 -dichlorobutane butane B. 1,3- dichloro C. 2,3 -dichlo D. 1,4- dichlorobutane 9. Which of the following is the strongest...