Q7 - Fill in the boxes with the product(s) or starting material for the following reactions. Draw only the predominate regioisomer(s) and indicate the stereochemistry where appropriate. If a racemic mixture is formed, you may indicate this using a wavy line or mark the chiral center with an asterisk (*), and write racemic in the box. You may also draw both enantiomers and write RACEMIC in the box.

Q7 - Fill in the boxes with the product(s) or starting material for the following reactions. Draw only the predominate regioisomer(s) and indicate the stereochemistry where appropriate. If a racemic mixture is formed, you may indicate this using a wavy line or mark the chiral center with an asterisk (*), and write racemic in the box. You may also draw both enantiomers and write RACEMIC in the box.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter14: Elimination

Section: Chapter Questions

Problem 40CTQ

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Draw all products for each of the following reactions or reaction sequences. For chiral molecules that are racemic, you needn't draw both enantiomers (just write if it exists an enantiomer). BE CAREFUL TO SHOW THE CORRECT ORIENTATION, AND THE CORRECT STEREOCHEMISTRY IN CASES WHERE STEREOCHEM IS FACTOR. Write also the name of the reaction that is occurring. Br, H,0 HBr
1. Draw all of the possible stereoisomers of the compound shown. Group them asenantiomeric pairs, or indicate any meso compounds.2. Label all stereocenters with the absolute stereochemistry (R or S).
k. Label the reactive features of the following set of reactants, select the most reactive feature, determine what it needs, show the reaction, and continue the process until you find the major stable product(s) of the reaction. As applicable, also state the stereochemistry of any chirality center created by the reaction and use either Fisher projection or perspective formula representations to draw the product showing the correct representation for the stereochemistry. (E)-3,4-dimethylhex-3-ene + Br2 in methanol
A E OH OH H This is a(n) OH R B F PCC, CH₂Cl₂ H type reaction. The major product if R = CH₂CH3 is compound The major product if R = H is compound G Look at the given reaction and use the letter code corresponding to each compound in the blank to indicate the expected product(s), or fill in the blank with the appropriate vocabulary word or phrase. If a specific stereoisomer (e.g single enantiomer) is formed, select that isomer only. If a mixture of stereoisomers (e.g. racemic or diastereomers) is formed, select the single structure that shows the appropriate mixture (e.g. lines not dashes). If we convert the reagent to Na2CrO4, H₂SO4, H₂O: The major product if R = CH₂CH3 is compound The maior product if R = H is compound ??? OH D H H though compound
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4. Draw all possible stereoisomers of the following compounds. Assign the appropriate absolute (R/S) or geometric (E/Z) configuration to each of the stereoisomers (or double bonds) and label pairs enantiomers, diastereomers and meso compounds. (a) CH3CHBRCHOHCH3 (c) CH3CH=C(Br)CH=CHCI (e) CH3CH₂CHOHCHOHCH2CH3 (g) OH НО... CI (h) H3C Br (b) CH3CHBRCHBRCH ₂Br (d) CH3CH(C6H5)CHOHCH3 (f) CH₂(OH)CH2-CH(OH)CH=CHOH CH3 (1) Br HS Br
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What are the major products? Show stereo chemistry (wedge, dash or stick) and indicate if there are enantiomers.
4. For each of the pairs of molecules drawn below, place letters in the corner boxes corresponding to all accurate descriptions of the relationship between the two molecules. a) b) O H3C HO Br HO OH Br HH HO TH CH3 HH HH CH3 HO Br Br HO OH HH HH CH3 CH3 OH all letters that apply all letters that apply all letters that apply all letters that apply A enantiomers B diasteromers C different conformations of the same molecule D identical comformations of the same molecule E constitutional isomers F stereoisomers G different molecules H both are chiral I neither is chiral
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Draw the major product for the reaction, showing the stereochemistry by using wedge bonds. The product will be racemic but show only one enantiomer. Clearly show stereochemistry by drawing one wedged, one dashed and two in-plane bonds per stereocenter. Remember that a hydrogen atom on a chirality center must be shown explicitly and with a wedge or dashed bond. Select Draw Rings More Erase Cl2 CH;CH2OH