The following questions are from experiment #35 from Lehmanâs book of Organic chemistry labatory. The experiment is called Directive effect in the bromination of vanillin. Please solve questions 1, 2, 3b and 6. And include the full solution including reactions and structural formulas. Thank you much. Note that the product obtained was 5-bromivanillin.
Exercises 1. Explain why the major product of the reaction was the one you obtained, rather than either of the other two possible products 2. What did you observe immediately after you added hydrobromic acid to the reaction mixture? Write a chemical equation that explains this result. 3. Describe and explain the possible effect on your results of the follow- ing experimental errors or variations. (a) The lab assistant set out a bottle of potassium bromide rather than potassium bromate. (b) You used anisaldehyde (4-methoxybenzaldehyde) rather than vanillin. 4. (a) Calculate the atom economy and reaction efficiency of your synthe- sis. (b) Describe some green features of your synthesis, and any that aren't so green. 5. Following the format in Appendix V, construct a flow diagram for the experiment. 6. Write a complete mechanism for the reaction you carried out. 7. Show how vanillin is synthesized commercially from guaiacol
