You have to prepare para red with diazonium salt of aniline and phenol  as well as diazonium salt of aniline and 2-naphthol. What you would expect to be different observation in the preparation of their para red compounds?

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(19, 8, 1) Specify a synthetic scheme that would produce the compound shown above in the fewest steps possible. Use one of the starting materials shown together with any of the available reagents. Give the number of the starting material followed by the letters of the reagents in the order of their use, for example: 3be.

(19, 8, 3) Specify a synthetic scheme that would produce the compound shown above in the fewest steps possible. Use one of the starting materials shown together with any of the available reagents. Give the number of the starting material followed by the letters of the reagents in the order of their use, for example: 3be.

Compound H (C,H,O,) gives a precipitate when treated with hydroxylamine in aqueous ethanol and a silver mirror when treated with Tollens' solution. Following is its 'H-NMR spectrum. Deduce the structure of compound H. Compound H 2H IH IH IH 7 5 Chemical shift (8) 0 ppm 10 9. 8. 3. 2.

Reaction of p-cresol with two equivalents of 2-methylprop-1-ene affords BHT, a preservative with molecular formula C15H24O. BHT gives the following 1H NMR spectral data: 1.4 (singlet, 18 H), 2.27 (singlet, 3 H), 5.0 (singlet, 1 H), and 7.0 (singlet, 2 H) ppm. What is the structure of BHT? Draw a stepwise mechanism illustrating how it is formed.

How might you convert geraniol into either ethyl geranylacetate or geranylacetone?

What product would you expect from reaction of one equivalent of methanol with a cyclic anhydride, such as phthalic anhydride (1,2-benzenedicarboxylic anhydride)? What is the fate of the second half of the anhydride?

How do you explain the difference in colors between the hydrazone product formed from simple aldehyde/ketone and aromatic aldehyde/ketone (yellow vs orange) in Dinitrophenylhydrazine Test?

C1- Cl -OCH₂CO₂H Show how 2,4-Dichlorohenoxyacetic acid or 2, 4-D can be 2,4-dichlorophenoxyacetic acid (2, 4-D) prepared by a reaction that is similar to the reaction mechanism on the following figure that shows how to synthesize phenoxyacetic acid.