ANSWER ALL MULTIPLE CHOICE !!

6. Which sequence of reagents would successfully carry out the following conversion? (A) Heat with NaOCH3 followed by addition of HBr (B) Heat with water followed by reaction with NaBr (C) Heat with KOtBu followed by reaction with Br2 (b) Heat with KOtBu followed by reaction with HBr in the presence of dibenzoyl peroxide 7. What product results when cycloheptene reacts with Br in dichloromethane as solvent? (A) cis-1,2-dibromocycloheptane (B) trans-1,2-dibromocycloheptane (C) cis-1,3-dibromocycloheptene (D) bromocycloheptane 8. Which reaction sequence will produce 1,3-cyelohexadiene? (A) reaction of cyclohexene with NBS followed by heating with NaOCH3 - (B) reaction of cyclohexene with MCPBA followed by heating with NaOCH3 (C) reaction of cyclohexane with Br2 in presence of light followed by heating with NaOH (D) reaction of cyclohexane with sulfuric acid, followed by ozonolysis 9. What reaction sequence will convert propane to I-propanol (CH3CH2CH2OH) ? (A) Reaction with Br/ light, followed by KOtBu, followed by BH3, followed by H2O2 and NaOH (B) Reaction with MCBPA followed by treatment with aqueous acid (C) Reaction with NBS, followed by heating with NaOH, followed by heating with ethanol (D) Burn the propane 10. What is the usual purpose for reacting an alcohol with toluene sulfonyl chloride (IsCI)? (A) The resulting tosylate esters are powerful antidepressants (B) To convert a poor leaving group (OH) to an excellent leaving group for use in subsequent reactions. (C) To convert alcohols from poor nucleophiles to excelient nucleophiles for use in subsequent reactions. (2) To reduce the toxicity of alcohols