please help with Q1-4, organic chemistry 2

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Q4.

Add curved arrow(s) to draw step 1 of the mechanism. Modify the given drawing of the product as needed to show the intermediate that is formed in this step. Add curved arrow(s) to draw step 1 of the mechanism for the transformation of 2 to 3 . Modify the given drawing of the product as needed to show the intermediate that is formed in this step. 13.78a Modify the provided structure of the starting material to draw the structure of compound 2 . Use the single bond tool to interconvert single and double bonds. Modify the given copy of the starting material to draw the major product(s). Use the single bond tool to interconvert double and single bonds, and use wedges and dashes to indicate the stereochemistry of any newly formed chiral centers. If more than one stereoisomer is produced, draw both products. Note: you can save time drawing by selecting a structure and using the copy/paste function