Dihydroresorcinol methylation

Dihydroresorcinol, 41, 56 methylation of, 41, 56 reaction with ethanol to yield 3 ethoxy-2-cydohexenone, 40, 41... 

Methyl hydrogen sebecate, 41, 34 Kolbe electrolysis of, 41, 33 1-Methylindole,40, 68 Methyl iodide, methylation of dihydroresorcinol with, 41, 57 Methyl isocyanide, 41, 15 Methyl 4-mcthyl-4-nitrovalerate, hydrolysis to acid, 41, 24 N-Methyl-N-nitrosoterephthalamide, preparation of diazomethane from, 41, 16... 

A2EPIN-2 -ONE, 44, 41 Dihydropyran, purification of, 41, 77 reaction with dichlorocarbene, 41, 76 Dihydroresorcinol, 41,56 methylation of, 41, 56 reaction with ethanol to yield 3-ethoxy-2-cyclohexenone, 40, 41 Dihydroresorcinoi. monoethyl ether, 40,41... 

Methylindole, 40, 68 a-Methylindole-3-acetic acid, 44, 66 Methyl iodide, methylation of dihydroresorcinol with, 41, 57... 

I, 3-cyclohexanedione (dihydroresorcinol CHD) 5,5-di-methyl-l,3-cyclohexanedione (dimedone)] and ammonia to form fluorescent lutidine derivatives [432]. These reactions of the diketones have been suggested for precolumn derivatization of aldehydes [433-435]. 

Note 1,3-Cyclohexandione (dihydroresorcinol) is available from 1,3-diphenol (resorcinol) by hydrogenation of its mono-sodium salt with one mole of hydrogen at temperatures below 50 °C catalyzed by RaNi in basic medium. Methyl vinyl ketone is a broadly used C4 building block produced by gas-phase formylation, aldol condensation of acetone with formaldehyde catalyzed by metal oxides (Scheme 4.33) [28, 29]. 

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