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Draw all stereoisomers formed when 1,2-dimethylcyclohexene is treated with HCl. Label pairs of enantiomers.
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- How many stereoisomers are formed from the reaction of 3-methylcyclohexene with NBS?Draw all stereoisomers formed when each alkene is treated with CHCl3 and KOC(CH3)3.(a) Draw and name all five isomers of formula C3H5F.(b) Draw all 12 acyclic (no rings) isomers of formula C4H7Br. Include stereoisomers.
- A is a toxin produced by the poisonous seaweed Chlorodesmis fastigiata. (a) Label each alkene that exhibits stereoisomerism as E or Z. (b) Draw a stereoisomer of A that has all Z double bonds.Account for the regioselectivity and stereoselectivity observed when 1-methylcyclopentene is treated with reagent. Q) BH3Draw the product obtained when cis-2-butene is treated first with Br2 in CH2Cl2, second with NaNH2 in NH3, and then finally with Li in NH3.
- a. With attention to stereochemistry, indicate the product of the SN2 reaction of cis-1-bromo-2methylcyclohexane. b. Draw and identify (R) and (S) enantiomers of lactic acid, CH3CH(OH)COOH. Use the proper conventions to draw Fischer projections.a. How many stereoisomers are formed from the reaction of cyclohexene with NBS?b. How many stereoisomers are formed from the reaction of 3-methylcyclohexene with NBS?(a) Draw all possible stereoisomers of 4-methylnon-2-ene, and name each isomer, including its E,Z and R,S prexes. (b) Label two pairs of enantiomers. (c) Label four pairs of diastereomers.
- What is the stereochemistry of the product made by the reaction of but-2-yne with 1 equivalence of H-Br? CH3 - C ≡ C - CH3Draw the products formed when (S)-butan-2-ol is treated with TsCl and pyridine, followed by NaOH. Label the stereogenic center in each compound as R or S. What is the stereochemical relationship between the starting alcohol and the nal product?Draw the products formed when each alkene is treated with BH3 followed by H2O2,HO−. Include the stereochemistry at all stereogenic centers.