Answer Happy

Propose a plausible mechanism for the following transformation ОН H 303 MSH Mos 13.380 Correct. An acid catalyzed epoxide ring opening begins with protonation, and the resulting protonated epoxide undergoes a ring opening due to nucleophilic attack at the tertiary position Deprotortion gives the final, neutral product Identify the most likely sequence of steps in the mechanism Protonation deprotonation nucleophilic attack. Deprotonation, nucleophilic attack. Nucleophilic attack, deprotonation Protonation, nucleophillc attack, deprotonation

Correct. The epoxide is protonated using a strong acid. This is a proton transfer step, Add curved arrow(s) to draw step 1 of the mechanism. Modify the given drawing of the product as needed to show the intermediate that is formed in this step. + HC HC ༡ - རྒྱལ་བ་ Hc HC Hint Attempts: 1 of 3 used

* Incorrect. Identify the position where the nucleophile would attack. Which of the four mechanistic steps is shown in this step of the mechanism? Add curved arrow(s) to draw step 2 of the mechanism. Modify the given drawing of the product as needed to show the intermediate that is formed in this step, нс to be HC CH CH HC SH Edit Drawing