Consider the four representations of 2,3-dichlorobutane. Which structures are meso? CH3 H. CI CH3 B A H3C H3C CI D A H. CI CH3 CI CH3 H3C H3C D B.

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

Name the Following Compounds

Which Fischer projection (A-D) correctly represents the bondline structure below? OH А. Н- Н О А CH3 H -OH OH Н В. НО- Н CH3 .... OH -H OH – НО Н С. CH3 Н -H OH D. НО- НО- CH3 Н H -H

The structure for 2,4-dimethylhexane is: CH₂ H3C-C-CH3 H H2₂ H₂C-C-C-CH3 CH3 E B A U A CH3 H3C-C-CH3 H₂C- CH3 H3C-C-CH3 B CH3 D CH3 H₂ I H₂C-C-C-CH₂ -CH3 CH3 H3C-C-CH3 H H₂ H₂C-C-C-CH3 CH3 CH3 HC-CH3 H₂c-c с H-CH3 CH3 CH3 E

Which one of the molecules below has a chiral (optical) isomer? a. C. b. H-C a H3C-C-CH3 H₂C-CH3 с -CH3 d OH d.. H3C- F NH₂ -OH CI H3C-CH₂-COH H₂C-CH3

3. Circle all meso compounds ( H. CH3 H3C- HO- CH3 OH CH3 H. CH3 но CI- CH3 HO,