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Draw structural formulas for the diene and dienophile that combine in a Diels-Alder reaction to form the product shown. lo Diene + Dienophile CAM • Consider E/Z stereochemistry of alkenes. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate multiple products using the + sign from the drop-down menu. Ⓡ Mill ChemDoodleⓇ Y -CI Sn [F CN < 46

3) For the species shown, do the following. a. Draw the complete MO picture and energy diagram for the л-system b. Label each orbital as bonding, antibonding, or non-bonding. c. Label the HOMO and LUMO where appropriate. d. Designate whether the molecule will react more readily with a nucleophile or an electrophile and designate which atom or atoms it will react most readily with using evidence from the molecular orbital diagram.

Complete the mechanism for the propagation cycle by providing the curved arrows. Please help solve for the 2nd step.

For the reaction in the image attached, write a mechanism, include curved arrows showing bonding changes.

Why is methanol chosen as the solvent for recrystallization? What would happen if the student uses dichloromethane instead? The reaction is Electrophilic Aromatic Substitution: Friedel-Crafts Alkylation. More info attached

[Review Topics] [References] Draw both resonance structures of the most stable carbocation intermediate in the reaction shown. 0 / + . You do not have to consider stereochemistry. . Do not include anionic counter-ions, e.g., I, in your answer. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right co Separate resonance structures using the →→ symbol from the drop-down menu. 985 HCI ? Sn [F