Be sure to answer all parts. Draw the products formed, disregarding stereoisomers, when the following alkene is treated with NBS + hv. Part 1: Two product(s) is/are formed, disregarding stereoisomers. Only consider constitutional isomers; ignore stereoisomers. Part 2 out of 2 CH3CH₂CH=CHCH₂CH3 Draw the two different constitutional isomers. Stereochemistry is not necessary. 1 T draw structure... draw structure...

The southern pine beetle utilizes a multi-component aggregation pheromone (one component shown below) to start mass colonization of healthy trees. The biosynthetic pathway involves the cyclization of this acetal from the straight chain structure. Draw the straight chain structure that could be used to form this acetal. Use wedges and dashes to correctly depict the stereochemistry. H3C- OH ✔

6. From what alkyl halides are the following alkenes have been made? CH3 CH3 CH3CHCH2CH2ĊHCH=CH2 7. Which of the two isomers would you expect to undergo E2 elimination faster? trans-1-bromo- 4-tert-butylcyclohexane or cis-1-bromo-4-tert-butylcyclohexane? Draw each molecule in its more stable chair conformation. Provide an explanation to your answer. 8. Classify each reaction as SN1, Sn2, E1 or E2. NaN3 (a) CH3CH2CH2CH2B CH3CH2CH2CH2N=N=N THE (b) CI КОН CH3CH2CHCH2CH3 CH3CH2CH=CHCH3 Ethanol (c) CI OČCH3 -CH3 CH3CO2H -CH3

TReview TOpics] [References Draw a structural formula for the major product of the reaction shown. CH3 CH3CHCH=CH2 Show product steréochemistry IF the reactant alkene has both carbons of the double bond within a • Do not show stereochemistry in other cases. If the reaction produces a racemic mixture, just draw one stereoisomer. C P opy aste C.