Click here for a copy of my lecture notes from today's lecture

Click here for a copy of the handout used in class today

Featured Golden Rules of Chemistry: Nothing today

1. Alkenes can undergo acid-catalyzed hydration (i.e. addition of H2O) involving a mechanism similar to that for H-X addition.(Markovnikov regiochemistry, stereochemistry mixed due to flat carbocation intermediate).

2. Carbocation intermediates can rearrange if migration of an H atom or less often a methyl group will create a more stable carbocation. This is relatively rare, but can occur in certain situations. This is not a new effect, it is simply hyperconjugation taken to the extreme.

3. Alkenes react with X2 to give vicinal dihalides via a three-membered ring halonium ion intermediate. Attack from the face of the halonium ion intermediate opposite to the halogen atom leads to anti stereochemistry of addition leading to trans products. Watch the stereochemistry here! Halonium ions do not rearrange.

HOMEWORK:

If you have not already, you must Watch the Terpene video. You are responsible for this information for the next midterm! Last time we will mention it!

Read: Sections 6.5 and 6.6 in the eBook.

Take the Daily Quiz 12 before 10 PM tomorrow. Click here to access the quiz. These quizzes are designed to review the important material from today's lecture. Together, they will count as 3% of your final grade.

Finish working on the Homework Problem Set 6, now due at 10 PM on Tuesday, October 15. Click here to access the Homework Problem Set 6. Note there are Aktiv Learning and Gradescope Questions, and you MUST DO BOTH. Collectively, homeworks count for 10% of your final course grade. The Aktiv Learning homework provides multiple attempts and provides feedback. It is intended to help you prepare for the Gradescope Questions, so we recommend you do the Aktiv Learning questions first.