Question

4.33 Give the product formed when each of the following alkenes reacts with a large excess of hydrogen in the presence of P/C. a) l.pentene (b) (E)-1,3-hexadiene (a) Give the structures of five alkenes, each with the formula C H. that would give hexane as the product of catalytie hydrogenation. (b) How many alkenes containing one double bond can react with H, over a Pu/C catalyst to give methyleyclopentane? Give their structures. (Hint: See Study Problem 49. p. 158.)

Answer 1

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Sdution: 4.33) With in of Palc react When hydrogen alkone, Alkane presence formed. is a) I- Pentene H2 42 3M M (1-pentence) . Pdl (pentane) as Ha lond : Pentane is formed It is an addition of mechi n a (b) () -1, 3-hexadiene product over do m A Helpdlc (excess) (..), 1,3-hexadiene (hexane) Both double bond will be hydrogenated, and hexame is formed as produit W AY TOWN mecha ** Gradero ex 11 H... nexane

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