Draw the major product as a planar projection (not chair conformation) for the E2 reaction below. Do not include stereochemical configurations for the chirality centers. CH3 H но- Н Н- CH C CH3 сH- DMSO HH Н H
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- Draw the Newman projection (sighting down this bond) of the conformation that will be capable of an E2 elimination. R/S stereochemistry is graded.When the following stereoisomer of 2-bromo-1,3-dimethylcyclohexane is treated withsodium methoxide, no E2 reaction is observed. Explain why this compound cannotundergo the E2 reaction in the chair conformation.Draw the products of these reactions clearly showing stereochemistry in each case if necessary. If the product is formed as a racemic mixture, clearly draw one stereoisomer with dash/wedge bonds and write “+en”. Circle whether each reaction occurs by an SN1 or SN2 pathway.
- Given that an E2 reaction proceeds with anti periplanar stereochemistry, draw the products of each elimination. The alkyl halides in (a) and (b) are diastereomers of each other. How are the products of these two reactions related?Show how you would synthesize each compound using methylenecyclohexane asyour starting material. If a chiral product is shown, assume that it is part of a racemicmixture.Please predict the products for each of the following reactions. *HBr in red* Clearly show the regiochemistry (Markovnikov vs anti-Markovnikov) and stereochemistry (syn- vs anti- or both). If a mixture of enantiomers is formed, please draw all the enantiomers. Choose an answer: A, B, C, or D
- Convert the following Fischer projections into tetrahedral representations, and assign R or S stereochemistry to the molecules on part a and b in the pictureDraw the major product for each of the reactions, showing the correct stereochemistry, if any. Draw hydrogen atoms on chirality centers.Draw the stereoisomeric products for the following reaction. Please draw all four bonds, including those to hydrogen, at all chiral centers.
- Which of the following is/ meso compounds? A) I B) II C) III D) I and IIDraw a reasonable mechanism using the curved-arrow formalism (include lone pair electrons).Show stereochemistry with two lines in the plane and a wedge or dash at the chirality center for your product.1a. Provide the products/reactants of the SN1 reactions below. Be very careful of the stereochemistry if applicable. (Recall that in SN1 reaction, the reactant’s chirality (aka configuration of the halo-carbon) is converted to both enantiomer – so you might need show both structures with dashed and wedge bonds 1b. Draw the mechanism (use curved arrow) of of EITHER c or d above