3. Which of the compounds below will rotate the plane of plane-polarized light? 1 2 3 4 5 A) only 1 B) 3 and 5 C) 1, 3 and 5 D) only 3 E) 1 and 3 5 CO OH 8 9 4. What is the configuration of the two chiral centers in the molecule at the right? ייוון 1 3 A) 3R,7R B) 3R,7S C) 3S,7R D) 3S,7S 2 4 6
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- 5) How many chiral centers does this molecule have? .COOH он BrWhich of the following molecules would be chiral (has a mirror image) a) H b) CH3 c) OH d) OH Cl H - C – OH Cl – C – H Cl – C – Cl C = C H C2H5 H Br HThe structure shown below is 3-fluoro-2-butanol. What is the configuration of the chiral centers? A) 25, 3R он CH3 B) 2R, 3S CH3 C) 2R, 3R D) 25, 3S
- i) How many lone pairs of electrons are present? ii) What is the configuration of the chiral centre? iii) What is the hybridization of the nitrogen atom in the nitrile moiety? iv) How many pi bonds are there?solve the last 3 parts, g, h, and iQ46: Is the molecule chiral? Does it contain planes of symmetry? CI Bri H CI -CB H
- Determine if this molecule is chiral, and also identify any chiral centers. H3C a H₂ C b ΤΟ H₂ C d 8 CH3 CH f h C H₂ i CH315) The molecule shown below is chiral? CH2OH HO2C HO2C Co,H H A) True B) False1. Circle the chiral centers for the given molecules: Guaifenesin - used to releive chest congestions HO ОН حمد NH₂ L-Theanine - active ingredient in tea that balances the stimulation from caffeine .OH NH₂ Serotonin - mood stabilizing hormone HN- OH ОН ОН Azidothymidine - first antiviral medicine to fight HIV
- What are the configurations of the chiral centers in this compound? Note: In this compound, the carbon atom of the aldehyde (-CHO) group is numbered C1. CHO HO HO -H -H CH₂OH O (2S,3S) O (2R,3S) O (2S,3R) O (2R,3R)Specify the configurations (R or S) of chiral centers a and b in the chem3D structure below. H3C. CH3 b a ČH3 ball & stick v labels Carbon a: Carbon b:! ( ans 4 with explanation )