10. When cyclohexane 5 is treated with a strong base it undergoes an E2 elimination. Answer the following questions about the reaction below. a) Draw the structure of the favored product for the E2 reaction 5 'Br Na b) Draw the two chair conformations for cylcohexane 5. (Make sure to draw out all groups including hydrogens.) c) Put a square around the most stable chair and circle the reactive conformation. d) The elimination of 5 proceeds much faster than the elimination of 6, which produces a different alkene product 7. Explain the difference in rate and the formation of a different alkene product. Explanation NaOCH3 slow Br 7 6

15. The two hexene isomers react with Br2. Draw the key reaction intermediates and the product(s); use arrow pushing to explain the stereochemical outcomes of the reactions Intermediate Final Products Br2 Intermediate Final Products Br2

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The two alkenes below react with HI at different rates. CH3CH=CHCH3 and CH₂=CH₂ Draw the structural formula of the MAJOR product formed by the alkene having the HIGHER reaction rate. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. TAYY [ ] در ChemDoodle Ⓡ

In parts 1 and 2 draw the two organic products of this reaction, showing any nonzero formal charges. Then, in part 3 answer the question regarding purification of the reaction mixture. 1. Draw the product with the higher molecular weight here:  2. Draw the product with the lower molecular weight here: