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A: The answer is as follows:
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A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…
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- A)Circle all of the stereo centers in MDMA. B) assign the absolute stereochemistry (R or S) for each stereo centerPrioritize the substituents on the chiral carbon noted. Assign the highest priority as “1.”Stretch the structure for (S)-3-bromo-2-methylpentane and add the stereochemistry at all stereogenic centers.
- By considering the stereochemical requirements for E2-elimination, and using an appropriate illustration need help indicating whether the more stable conformer (conformer B) of trans-1 can undergo E2 elimination. Thank you :)Give major products for 1,2-/1,4-additions (A) Diels-Alder (B-D) cycloadditions [2+2] cycloadditions , and Retro-Diels-Alder (E) cycloaddition. Illustrate the regiochemistry and stereochemistry (me so, enatiomer., exo or Endo) for cycloadditions B-D?Rank the following groups in order of decreasing priority. −F, −NH2, −CH3, −OH
- (a) Draw all other stereoisomers of the molecule , labelling meso forms (if any), and assign descriptors to chiral carbon atoms. (b) Including molecule below, label pairs of enantiomers and pairs of diastereomers. (c) If you were to distill a mixture of all the isomers, how many fractions could be obtained, and what is in each fraction?Rank the following groups in order of decreasing priority. −CH=CH2, −CH3, −C≡CH, −H1, part A) We observe 6 carbon stereocenters in the molecule below. Indicate each stereocenter, and give the absolute S or R configuration. 1, part B) Indicate each stereoisomer in this molecule, and give the absolute S or R configuration. Then, indicate E or Z configuration of all alkenes in it (*ignoring aromatic ring*).
- Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system. I) -CH=CH2 II) -CH3 III) -CH IV) -OH 1) IV > III > I > II 2) IV > I > III > II 3) III > IV > I > II 4) II > I > III > IV(I) Give major products for 1,2-/1,4 additions (A) Diels-Alder (B-D) cycloadditions, [2+2] cycloaddition, and Retro-Dial-Alder (E) cycloaddition. Illustrate the regiochemistry and stereochemistry (meal, enantiomer, exo or Endo) for cycloaddition B-D.Assign the stereochemical configuration (E or Z) for the alkene below. Show your work, indicating clearly which groups are assigned high priority (e.g., through assigning the groups numbers, circling only the high priority groups, or labeling groups as high or low).