Chapter 14, Problem 31P

draw structures for all the isolated, conjugated, and cumulated dienes of molecular formula C5H8.

Chlordane, 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?

Which one alkene will exhibit cis-trans isomerism? A B OC OA u B D

Which of the following is chiral? O 3-methyl-1,2-butadiene O 2-methyl-1,3-butadiene O 2.3-pentadiene O All are achiral O All are chiral

Name the alkene below.Use ONLY E/Z designators to indicate stereochemistry.H2C=C=CHCH3

please compare and contrast the hybridization of ethylene and butadiene: ethylene butadiene LUMO LUMO HMO HMO Occupancy: Occupancy: Orbital energy (eV) Orbital energy (eV) Diels alder reactivity Diels alder reactivity

What descriptive term is applied to the type of diene represented by allene (1,2-propadiene)? O isolated diene O conjugated diene O cumulated diene O alkynyl diene O saturated diene DEL

Acyclic conjugated dienes may exist in two conformations, as shown below. Based on differences in steric strain, which of the following dienes has the greatest preference for the s-trans conformation? * s-cis s-trans H;C / H;C- CH3 CH3 CH3 H;C- CH3

Draw structural formulas for the cis and trans isomers of hydrindane. Show each ring in its most stable conformation. Which of these isomers is more stable?