3. Mechanisms. Draw curved arrow mechanisms. Some questions have additional instructions,please read carefully (35 points, points indicated for each) a) Draw a mechanism. Water is a byproduct. (7 points) b)

Draw a mechanism for the formation of the lactone and the byproducts shown. Draw the structure of LDA to start your mechanism. (7 points) c) Draw a mechanism. Sulfuric acid is a catalyst. (7 points)