Chapter 23: Problem 586
Ortho-nitrophenol L and para-nitrophenol L \(\mathrm{N}_{2}\) have different acidities, melting points, and boiling points. In all cases, the ortho- nitrophenol has lower values in these areas. Why?
Chapter 23: Problem 586
Ortho-nitrophenol L and para-nitrophenol L \(\mathrm{N}_{2}\) have different acidities, melting points, and boiling points. In all cases, the ortho- nitrophenol has lower values in these areas. Why?
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Get started for freeOutline a synthesis of cumene from cheap, readily available hydrocarbons. Then synthesize phenol from cumene.
In which of the" following compounds would you expect intramolecular hy drogen bonding to occur; o-nitroaniline, o-cresol, o-hydroxybenzoic acid (salicylic acid), o-hydro-benzaldehyde (salicylaldehyde), o-fluorophenol, o-hydroxy- benzonitrile.
Write the principal reaction product or products, if any, of \(0-\) cresol with \(\mathrm{CO}_{2}, \mathrm{~K}_{2} \mathrm{CO}_{3}, 240^{\circ}\)
A student attempted the following synthesis of - methoxy- benzyl alcohol from o-cresol, but got essentially no yield. What went wrong?
When phloroglucinol, \(1,3,5\) -trihydroxybenzene, is dissolved in concentrated \(\mathrm{HClO}_{4}\), its nmr spectrum shows two peaks of equal area at \(86.12\) and 8 4.15. Similar solutions of \(1,3,5-\) trimethoxybenzene and 1,3 , 5-triethoxybenzene- show similar nmr peaks. On dilution, the original compounds are recovered unchanged. Solutions of these compounds in \(\mathrm{D}_{2} \mathrm{SO}_{4}\) also show these peaks, but on standing the peaks gradually disappear. How do you account for these observations? What is formed in the acidic solutions? What would you expect to recover from the solution of \(1,3,5\) -trimethoxybenzene in \(\mathrm{D}_{2} \mathrm{SO}_{4} ?\)
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