Question

1. Draw Frost circle diagrams for each compound shown. Assume that all atoms in the ring are sp? hybridized. Populate the pi electrons in the corresponding MO's. Identify the compound as aromatic or antiaromatic. (5 pts) Dec 2. What is the Hückel number of pi electrons for the molecule shown below? How many pi electron pairs does it have? Would you expect this molecule to be aromatic, antiaromatic or non aromatic? Explain. (3pts) 3. Rank the reactivity of the compounds shown below when using a Friedel Crafts alkylation reaction. Make sure you label which is least reactive and most reactive. (5pts)

Answer 1

Huckel theory is applicable for planner molecules ,

frost circle diagram :- 1 I nb nb Đ - - - 1 -0 1 1 laro matic) (one) 1L anti-aromatic) (4ne-). It has non planner hydrogen hence it is a non- aromatic compound non Quetiaromatic lone- In té = she (n=47 Losques OH cth leasti most Reactive Increasing Rea chuity

Friedel Craft reaction is a electrophilic substitution reaction .