Problem 2: https://doi.org/10.1016/S0040-4039(00)76159-4 Answer to Problem 2: Hint. Assume the reaction can ONLY occur from the least sterically hindered side of the molecule. Draw or build a 3-dimentional conformation to support your answer. OsO4 ? A HO HO.... Η Но HO.... B с D HO но HO HO. HH H H
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- Please predict the outcome of each reaction below: Type you answer as a letter: A, B, ...., or F.Which chair represents the most stable conformation of Molecule A? A B b D d E e Molecule A Me ..Me 'Me Ме Chair conformations Me a) Me b) c) Me Me Me Me Me Me- -Me Me Ме Me d) Ме e) Ме Me Me- Ме Me Me Me3. Draw all possible conformations for 2-methylbutane. Label all unfavorable interactions. Which conformation is most stable? Explain.
- 4. Isomers and Stereocenters ( (a) Assign each set of molecules as constitutional isomers, conformational isomers, enantiomers, diastereomers, or identical. Please write the full name for the type. Molecules Type (b) H₂Ca HgC.. CH3 OCH₂ CH3 af OCH, SP H₂C**** H₂C H₂C NGOCH, H.C_OCKS OCH₂ CH₂ H₁C HC H*** CI H H CI Br H3C CH₂ Br (d) E) (0) For each of the following molecules, write the number of stereocenters and circle the center of any stereocenters. (i) (ii) H₂C (онт (eg 5) (b) -CH3 Isegna CH3 on mots eno H₂C CH34)- Calculate the free-energy for the first three conformers of A (i.e., A- conformation of A, A. Show how you were able to determine th receive full credit. A") starting from the most stable hation of A, A. Show how you were able to determine the answer an provide the answers below to IA] Calculation and Structure of A:_ Final Answer, Calculation and Structure of A': Final Answer Calculation and Structure of A" Final Answer 4Draw all six confirmations for the molecule shown (three eclipsed and three staggered Newman projections). Identify the anti-conformation. Identify the conformation that has the highest energy. Identify a staggered conformation with the most Gauche interactions.
- 5. The structure on the right is cortisone. What is the index of hydrogen deficiency (IHD) of cortisone? HINT: To answer this question, count the number of rings and double bonds. That's easier than figuring out what the formula of the molecule is. A) 4 B) 5 C) 6 D) 7 E) 8 I H- OH I OHGive answer to all parts otherwise i will give you downwardDraw a perspective representation of the most stable conformation of 3-methylhexane. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges), Atoms, and Templates toolbars. 1. [1] A 2 A Submit Request Answer H+ 2D EXP. CONT. Marvin JS by ChemAxon A I UZ OS J - PF CI Br