Q2: Explain why epoxides that react in an SN1 manner will not show any stereochemical inversion in the product. Q3: Rationalize why Alcohol B will react under the indicated reaction conditions, but Alcohol A will not. A ☑ OH B OH PBr3 R-Br

Select all compounds capable of keto-enol tautomerism. он H.C. он H.C. H.C. H.C. CH, CH, CH, H.C H.C a b d

Answer the following question ...

Nonconjugated B,y-unsaturated ketones are in base-catalyzed equilibrium with their conjugated a,ß-unsaturated isomers. The mechanism of interconversion involves the formation of a resonance-stabilized intermediate with three resonance contributors. Draw the structures of these three resonance contributors. OH • You do not have to consider stereochemistry. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate resonance structures using the symbol from the drop-down menu. + *** Sn [F