Draw the structure of a meso form of 1,3-dichlorocyclopentane. Take particular care to indicate three-dimensional stereochemistry detail properly.
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Draw the structure of a meso form of 1,3-dichlorocyclopentane. Take particular care to indicate three-dimensional stereochemistry detail properly.
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- Draw the structure of (1 R , 2 R )-1-bromo-2-chlorocyclobutane. Take particular care to indicate stereochemistry properly1, 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*).Show that the (S,S) enantiomer of this (R,R) diastereomer of 1-bromo-1,2-diphenylpropane also undergoes E2 elimination to give the cis diastereomer of the product. (We donot expect these achiral reagents to distinguish between enantiomers.)
- In another part of the project, an analogue of the protease inhibitor darunavir is further developed, as shown in structure 11.Enter the correct stereochemistry for all stereo centers and the double bonds that are relevant in 11. Answer sheets at the end of the problem set can be used.Draw the structure for (E)-1,3,3-tribromo-2-methylpenta-1,4-diene. Be sure to clearly depict the geometric isometry by adding all bonds, including those to hydrogen, to sp2 stereocenters.Is the reaction product you just prepared from butadiene and maleic anhydride a mixture of enantiomers or a meso compound? Explain using a drawing of the product to justify your answer.
- Why does an SN2 reaction occur with inversion of configuration stereospecifically?Answer the following question pertaining to the reaction of maleic anhydride and 1,3-butadiene: - Which conformation of 1,3-butadiene, s-cis or s-trans, is thermodynamically preferred and why?Consider the following statement in reference to SN1, SN2, E1, and E2 reactions of haloalkanes. To which mechanism(s), if any, does the statement apply? Substitution at a stereocenter gives predominantly a racemic product