7. Determine whether each of the following compounds is a reducing sugar: (Hint, you should convert from cyclic acetal or cyclic hemiacetal to be open chain form (Fischer projection). CH₂OH HO CH₂OH HO OCH3 HO OH OH OH OH
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- You have isolated a new trisaccharide from a new species of insect shown below that you are calling Jiminy-Cricketose. Draw the Hayworth Projection of the molecule to the right of it. НО,, НО НО НО ОН OH ОН ОН "ОН ОН ОНEach H↔H eclipsing interaction in ethane costs about 4.0 kJ/mol. How many such interactions are percent in cyclopropane? What fraction of the overall 115 kJ/mol (27.5 kcal/mol) strain energy of cyclopropane is due to torsional strain.a) Which of the following monosaccharides will react with Tollens' reagent? Circle all that аpply. СООН CH2OH CH2OH OCH3 но- H- ОН HO FH OH CH2OH CH2OH OH II III IV V b) Decide whether the disaccharide shown below is a reducing or non-reducing sugar CH2OH но Но- ОН CH2 но Но OH OH 우 오
- !!!!! Br MULTIPLE CHOICE QUESTION CH₁ CH₁ The above molecules are identical enantiomers diastereomers BrNeed help in E and F. Are stereogenic centers suppose to have 4 different molecules surround them?3. Draw the most stable chair conformation of (trans) 3-t-butylcyclohexanol. 4. State whether these two are: a) the same molecule b) different compounds that are not isomers c) constitutional isomers d) diastereomers e) enantiomers H CH3 CH₁ Br Br Br CH3 H Br H CH3
- 2. Convert the following line structure into a Fischer projection. ОН ОН LOH ӦН ОН 3. Which of the following molecules do you expect to have a higher boiling point, and why? Be sure to mention specific intermolecular interactions. vs. A BWhat is the reduction of D-erythrose? OH H. CH2OH Select the correct answer below: CH,OH OH H. OH H- OH CH2OH2. Draw a Fischer Projection of (2R,3R) erythrose. 3. Give a complete stereochemical name for the compound below, which is a 1,2,3-butanetriol. CH,ƠH НО — -H- НО — -- CH3
- Which of the following represents a meso compound? a 6 C 1. 2. H CH, Br Br Br H ** *6 CH, H₂C 3) 3. H,C. H Br H 1) Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Br H₂C 2) Br CH,? Modify the given carbon skeleton to draw the major product(s). If a racemic mixture of enantiomers is expected, draw both enantiomers. Note: you can select a structure and use Copy and Paste to save drawing time. C A z + : 1) OsO4 2) NaHSO,/ H₂O H3C CH3 H с N O P S LL F CI Br I i3. Draw the two B-pyranose chair conformations for this sugar and indicate which chair, if any, is expected to be the more stable conformation. O 11 C-H H-C-OH H-C-OH HO-C-H I HO-C-H CH 3