below has stereoisomers can exist." H HICION C-0 HO-C-11 H-C-OH HC-OH H-C-OH O2,4 O 4,16 1,2 O 3,8 O 5,32 asymmetric carbons, therefore different
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- Which of the following structures is chiral? H3C Н Н H3C 01 02 03 c=c= 1 С c=c= 3 ECCH, Н H 4 H3C Нас HC H3C C=CC 2 C C C 4 H CH3The following compound is achiral O chiral C=C=CH CH3online.butiercc.edu/Courses/ 147954 2493001/ take zınb Question 4 1 pr Which molecule is the enantiomer of this molecule? H. H3C Br CICH, CH3 Bri C H CH,CI CH,CI Br C-H CH3 H3C -Br CICH, H H3C CICH, Br
- 13. Classify the pairs of molecules as not the same molecule, structural isomers, diastereomers. enantiomers or identical. Circle any molecules that are not achiral. (a) (b) (c) F X Br. H H HY CI "Br Br H H CI H3C Br H Br I I Br CI H Br CH H H CH3 Br1) Mark the chiral centers in the following molecules, if any, with an asterisk (*). (b) (a) НО HO HO OH OH (c) (d) *H₂N- НО HC CH3 CH3 c-0 О None OHWhich of the following compound consider to be chiral? O II O III OI CONV Br OH Olla - OH 11 CH₂ FIC C M III CH₂ CH₂CH₂ FIC O IV
- X What is the absolute configuration 0/4 of the chiral centers in the following compound? H OH НО 3 OH HO' H 2R, 3R 2S, 3R 2R, 3S 2S, 3S 2.5-54 Ribose, an essential part of ribonucleic acid (RNA), has the following structure: H H H OH CHO Ribose Но но н но н (a) How many chirality centers does ribose have? Identify them. (b) How many stereoisomers of ribose are there? (c) Draw the structure of the enantiomer of ribose. (d) Draw the structure of a diastereomer of ribose.Which of the following molecules is/are chiral? c=c H-C-F ČI ČI III II O I only Il only III only O I and II Il and III
- 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 CH3Which 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 H1) Mark the chiral centers in the following molecules, if any, with an asterisk (*). (b) (a) НО НО НО ОН 0 OH (c) (d) *H3N-H HOT -С-0 HC-CH3 CH3 ОН