: o Step 3: complete the structure and add curved arrows. Step 4: complete the structure to draw the final product. : 0 : | H _ö: H ↑ H H Complete the mechanism for the acid-catalyzed alcoholysis of the epoxide by adding any missing atoms, bonds, charges, nonbonding electrons, and curved arrows. Step 1: add curved arrows. H H Step 2: complete the structure and add curved arrows. + O H | : 0: ↑

Draw the structure of the organic product formed when the given compounds undergo the three-step reaction sequence indicated. Select Draw Rings More Erase C Br 1. NaOC,H5. C,H5OH 2. NaOH, H2O 3. H3O*, heat

5. Complete the following reactions by writing the correct product Ph NaOCH3 H OTS Ph H- Methanol Ph ELOH

Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. CI H₂N OH • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • Do not include counter-ions, e.g., Na+, I, in your answer. • In cases where there is more than one answer, just draw one. Sn [F