Why is the compound shown not considered aromatic ev though it has 3 double bonds in conjugation and a 6- membered ring? I.Ilt is not planar II.It does not contain 4n+2 pi electrons III.It does not have a continuous cyclic system of pi orbita A) Ionly B) I and III III only

A. B. C. Me CH3 ClC H ¿ OH NH₂ H Br-C-C H3C H Br CH3 Comparing structure pair in B OH Comparing structure pair in C [Select] Me HC CI Comparing structure pair in A [Select] [Select] Same structure drawn differently Enantiomers Diastereomers NH₂ Br H3C CH3 Br HC-CCH3 H For the following two structures compared in parts A and B, determine whether they are enantiomers OR diastereomers OR the same structure drawn differently (non-bonding electrons not included for clarity).

AZT was the first drug approved to treat HIV, the virus that causes AIDS. Explain why the sixmembered ring of AZT is aromatic.

Compound 1 Br Bri НІ T ... H The correct IUPAC names are: Compound 2 H Br Br I.. H Br The compounds are diastereomers not isomeric enantiomers identical constitutional isomers Compound 1: (2R, 3R)-1,2,3-tribromobutane, Compound 2: (2S, 3R)-1,2,3-tribromobutane Compound 1: (2R, 3S)-1,2,3-tribromobutane, O Compound 1: (2R,3R)-1,2,3-tribromobutane, Compound 2: (2S,3S)-1,2,3-tribromobutane Compound 2: (2R, 3R)-1,2,3-tribromobutane O Compound 1: (2S,3S)-1,2,3-tribromobutane, Compound 2: (2R,3S)-1,2,3-tribromobutane

6. Consider each compound below. Note the number of T electrons in the ring in each compound and indicate if it is aromatic or not aromatic (assume planarity for all molecules). B. TT electrons TT electrons TT electrons Aromatic? Aromatic? Aromatic?

None

AZT was the rst drug approved to treat HIV, the virus that causes AIDS. Explain why the sixmembered ring of AZT is aromatic.

q12 PLS HELP VERY URGENT, NO EXPLANATION REQUIRED

14. Menthol is a mild anasthetic isolated from peppermint oil. The most common stereoisomer is shown at left in bond line. Which chair structure represents menthol? SOH A) B) CH3 CH3 OH by OH CH(CH3)2 CH(CH3)2 C) D) OH CH3 IN OH ОН CH3 CH(CH3)2 CH(CH3)2

Are each of the following molecules aromatic, antiaromatic or non-aromatic? A. I: aromatic, II: antiaromatic, III: aromatic, IV: non-aromatic, V: non-aromaticB. I: aromatic, II: antiaromatic, III: aromatic, IV: aromatic, V: non-aromaticC. I: aromatic, II: aromatic, III: antiaromatic, IV: non-aromatic, V: non-aromaticD. I: antiaromatic, II: aromatic, III: aromatic, IV: non-aromatic, V: antiaromaticE. I: antiaromatic, II: aromatic, III: non-aromatic, IV: non-aromatic, V: aromatic