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- Which molecule do you expect to be more stable, a or b)? Use both chair conformations of each molecule to rationalize your answerStarting from the Newman projection below, rotate the back carbon to provide the structure in a gauge staggered conformation.a) Give the mechanistic symbols (SN1, SN2, E1, E2) that are most consistent with each of the following statements:
- Draw the topological structure of the following molecule, clearly illustrating the stereochemistry.b) Draw in the box below the other chair conformation and identify the one that is the most stable between A and B. Briefly justify your choice.He’s my work for c and d. I just want to know if my stereochemistry is correct. Will they have enantiomers?Build a model of methylcyclohexane, and use the model to complete the following Newmanprojections of methylcyclohexane in the chair conformation: a. When the methyl group is in an axial or equatorial (circle one) position, the molecule is inits lowest potential energy conformation. b. Label one Newman projection above anti and the other gauche to describe the relationshipbetween the methyl group and C3 of the ring. c. In general, which is a lower PE conformation, anti or gauche? d. Explain how your answer to b and c provide an explanation for why it is more favorable fora large group to be in an equatorial than an axial position.
- Pyrethrin II and pyrethrosin are two natural products isolated from plants of the chrysanthemum family. Pyrethrin II is a natural insecticide and is marketed as such. Q,)State the number of stereoisomers possible for each molecule.Imagine that this worksheet has sucked you the plane of the page, and you are now facing the indicated bond of the drawn molecule. a. Draw the six main Newman projections for the indicated bond: three eclipsed, three staggered. b. Label which conformers are eclipsed ands taggered.c. Identify the most and least stable conformer, and explain your reasoning.Why is molecule b more stable than a in chair conformation?
- In each case below, draw the highest and lowest energy conformations. If there are cases where there are 2 or 3 confirmations that are degenerate, choose only one as the anwser.Perform a confirmational analysis on cyclohexane derivative 1. Draw out both possible confórmeles and circle the preferred (lowest energy) conformer. Using A, U or G values estimate the energy difference ( Change in G) between the two confórmeles and predict the approximate ratio of the two confórmers at room temperature.is this (Z) or (E) conformation, and how do you know?