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UGA CHEM 2211 - Alkene Reactions III
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CHEM 2211 1nd Edition Lecture 20Outline of Last Lecture I. Carbocation stability II. Alkene reactions Outline of Current Lecture I. Alkene reactions cont. Current LectureAlkene reactions The addition of alcohol to an alkene - Alcohol reacts with alkenes in the same way that water does, so it also requires an acid catalyst like H2SO4. o The product of this reaction is an ether. Another way to convert an alkene to an alcohol is by hydroboration- oxidation - This reaction is two parts o 1. BH3/ THFo 2. OH-, H2O2, H2O - 1st BH3 acts as the electrophile then the H- bonded to boron is the nucleophile - 2nd sodium hydroxide and hydrogen peroxide is added to the reaction mixture. o This produces an alcohol. The addition of a Halogen to an Alkene Good examples of halogen addition are Br2 and Cl2. - The final product is vicinal meaning two bromides or chlorides are on adjacent carbons- The 2 Br or Cl atoms are on either side of the double bond. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- The reaction cant be achieved without both reactants being dissolved first. o CH2Cl2 readily dissolves them both Reaction diagrams Alcohols H2SO4CH3CH=CH2 + CH3OH  CH3CH—CH2 OCH3 HHydroboration- oxidation 1. BH3/ THFRCH=CHR  RCH---CHR2. HO-, H2O2, H2O H OHHalogen addition CH3CH=CH2 + Br2  CH3CH—CH2 Br


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UGA CHEM 2211 - Alkene Reactions III

Type: Lecture Note
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