2. Draw all stereoisomers for the following molecules; indicate the stereochemical relationships for all possible pairs. HO HO. Br Loine Br OH oloM H3C CH3 Br () ()
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- Draw the structure of (Z)-2,3-dichloro-4-methyl-2-hexene. • Consider E/Z stereochemistry of alkenes. • You do not have to explicitly draw H atoms. opy aste ChemDoodle+ Br₂ CH₂Cl₂ You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. Do not include counter-ions, e.g., Na, I", in your answer.Draw the structure of (Z)-2,3-dichloro-4-methyl-2-hexene. Consider E/Z stereochemistry of alkenes. • You do not have to explicitly draw H atoms. opy aste C ChemDoodle
- 5) For the following: a) Draw the "flat" line structure of the following (be sure to indicate stereochemistry) Br OH b) Draw both chair conformations of the following compound. Indicate which form is the most stable H3C°Chemistry 9) Write Newman projections for the gauche and anti-conformations of 1,2- dibromoethane (BrCH2CH2Br). Which conformation is more stable than the other and explain why?(a) Draw all stereoisomers formed by monobromination of the cis and trans isomers of 1,2-dimethylcyclohexane drawn below. (b) How do the products formed from each reactant compare-identical compounds, stereoisomers, or constitutional isomers? cis-1,2-dimethylcyclohexane trans-(1R.2S)-dimethylcyclohexane
- 5. (a) Identify the relationship of the two compounds below. (b) Write the most stable chair conformation for each. Br CH₂ and A. identical B. constitutional isomers C. stereoisomers D. unrelated Br CH₂4.(a). Draw the structures of (i) cis-1,4-Dibromocyclohexane and (ii) trans-1,4- Dibromocyclohexane. 4(b). Draw the most stable conformers of (i) cis-1,4-Dibromocyclohexane and (ii) trans-1,4-Dibromocyclohexane. 4(c)Which is more stable? (i) cis-1,4-Dibromocyclohexane or (ii) trans-1,4- Dibromolcyclohexane. Explain the reason for your choice.draw the most stable conformation of (a) ethylcyclohexane (b) 3-isopropyl-1,1-dimethylcyclohexane
- Draw a stereoisomer of cis-1,3-dibromocyclohexane. (Note that the question asks for a different stereoisomer of the named compound and not the патed compound itself) Use the wedge/hash bond tools to indicate stereochemistry where it exists. In cases where there is more than one answer, just draw one.3. Deduce the relationship between each of the following pairs as enantiomers, cis-trans isomers, constitutional isomers or same molecule. (a) H and Br он но Br (b) OH OH OH H and OH(a) How many stereogenic double bonds are in octa-1,3,5-triene? How many stereocenters are there? Draw and name the four stereoisomers of octa-1,3,5-triene.