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- In 4+2 cycloaddition, ENDO stereochemistry is preferred because: endo stereochemistry allows the diene to adopt s-cis conformation. endo stereochemistry results in less steric hindrance. the transition state leading to endo stereochemistry is higher energy. it allows for additional π to π overlap between the diene and the dienophile.Name compound and include stereochemistry if neededChlordane, like DDT, is an alkyl halide that was used as an insecticide for crops such as corn and citrus and for lawns. In 1983, it was banned for all uses except against termites, and in 1988, it was banned for use against termites as well. Chlordane can be synthesized from two reactants in one step. One of the reactants is hexachlorocyclopentadiene. What is the other reactant?
- Alcohols can be converted to alkyl chlorides using SOCl2 with complete inversion of stereochemistry. Using curved arrows draw the stepwise mechanism for chlorination of an alcohol. Be sure to include lone pairs necessary to the mechanism steps and any non-zero formal charges.The bicyclic alkene P can be prepared by thermal electrocyclic ring closure from cyclodecadiene Q or by photochemical electrocyclic ring closure from cyclodecadiene R. Draw the structures of Q and R, and indicate the stereochemistry of the process by which each reaction occurs.By hydrohalogenation of CHF2-CH=CH2 halogen atom is added to: Select one:a. second carbon atomb. Third carbon atomc. No reactiond. First carbon atom
- The heats of combustion (−∆H°) of heptane and 3,3-dimethypentane are 4,817 and 4,809 kJ/mol, respectively. Which statement is true? A. Heptane is 8 kJ/mol more stable then 3,3-dimethylpentane. B. 3,3-Dimethylpentane is 8 kJ/mol more stable than heptane C. Stabilities cannot be compared since they are not isomers. D. Stabilities cannot be compared since they give different combustion products.A 1,2-cis disubstituted cyclohexane, such as cis l,2-dichlorocyclohexane, musthave one group axial and one group equatorial. Explain.Rings + Unsaturation --- Hydrogenation If compound A C51H81BrN5O3P3 is hydrogenated to give compound B C51H101BrN5O3P3. How many rings does compound A have? Assume that P has a valency of 5. Would the answer be 4 rings? Formula -> unsat + rings = 1+C +N/2 - H/2 - X/2