Question

(a) Discuss the carbonylation of organoboranes in terms of the mechanism and synthetic scope of the reaction

(b) the outcome of oxidation of alkenes with iodine and silver acetate to afford diols depend on the moisture content of the reaction mixture. propose a detailed mechanism to account for the observed stereochemistry of the product of the reaction of cyclohexene with iodine in the presence of aqueous silver acetate followed by alkalinic workup

(c) propose a mechanism for the base-promoted halogenation of propanone with 3 mol equivalents of bromine followed by dilute acide hydrolysis