What must be done to OH to make it a good leaving group?

Complete the synthesis below by drawing the structure of the organic product in each step. Draw the structure of A, B and C.

CHM 2 1 25 LABORATORY MANUAL VII. Draw the three intermediates, including resonance structures, for the attack of nitronium ion on pyridine. Which position(s) is favored? Why? VH. Draw the two intermediates, including resonance structures, for the attack of nitronium ion on pyrfole. Which position is favored? Why?

Which O atom of 4-pyrone do you think is more basic?Explain.

Explain why furan is primary substituted at the 2 positive when it undergoes reaction. E* E an EAS

For each of the reactions indicate which reactant is the nucleophile and which is the electrophile.

#20 help

10. Consider the below reaction between the acetylide ion and methanol. Draw the conjugate acid that is formed as a product in this reaction.

Draw all intermediates and show all electron - pushing OH HBr A. - Br B. 오이 CH3NH2 C. H₂O® E. NaOEt HOEt S D. OH

1. You have an alkyl halide and the product has a thiol group without an alkyl, what is the reagant?   2. What is the reaction of disodium sulfide and Na2S, what is its product?   3. You have a thiol compound that reacts with sodium hydroxide, what do you get?   4. You have an oxyrane reacting with sulfuirc acid and methanol, what do you get? 5. Have an alkene reacting with Br, what do you get?