Perform the following syntheses. Use the retrosynthetic analysis shown in the example. Be certain to show all of your reasoning which leads to your final answer. All can be accomplished in 2-3 steps. Show all reagents and intermediate products. All reactions necessary to complete these syntheses can be found in Chapters 6, 7, and 9. Also, look at the reactions in Part I. Remember, start from the target product and go one-step back to get started. HO CH₂ HCC- Br

Using chemdraw or a any chemical drawing program show the mechanism of the decarboxylation of 3,4- Dihydroxyhydrocinnamic acid (DHHCA). Be sure to show the m/z (mass to charge ratios) of the starting material and decarboxylated product.

curved arrows are used to illustrate the flow of electrons. using the provided starting structure, draw the curved electron- pushing arrows for the following reaction or mechanistic steps. be sure to account for all bond-breaking and bond-making steps. then draw any missing organic intermediates or products for this reaction. include all lone pairs in the structures. ignore inorganic byproducts, counterions, and solvents.

Fill in the missing reagents to carry out the following synthetic step. بلده اله 2.