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- The following pKa values have been measured. Explain why a hydroxyl group in the para position decreases the acidity while a hydroxyl group in the meta position increases the acidity.What reagents are needed to carry out the following syntheses?Draw reaction of an Α,β -unsaturated carboxylic acid derivative with a nucleophile forms a nucleophilic acyl substitution product with a reactive carbonyl group and a conjugate addition product with a less reactive carbonyl group
- Propose a complete mechanism for the following reaction and draw each step in the mechanism. но H;O* OH +Provide the missing reagents required for the following transformation: OH HO-The following molecule undergoes an intramolecular reaction in the presence of pyrro- lidinium acetate, the protonated form of pyrrolidine. Draw the product of this reaction, assuming that a dehydration reaction takes place. Me Me Но N: 'N' AcO Ме pyrrolidinium acetate Me Me Me
- How does the synthesis of these two reagents work?What reagents are required to carry out the following synthesis?When a cyclic ketone reacts with diazomethane, the next larger cyclic ketone is formed. This is called a ring-expansion reaction. Draw a mechanism for the following ring-expansion reaction.