Pentanoie acid

CN l3a5-(3aa,4p,6aa)l-hexahydro-2-oxo-17/-thieno[3,4-r/]imidazole-4-pentanoie acid... 

Pentanoie acid 3-Methylbutanoic acid 2,2-Dimethylpropanoic acid ... 

Methylpyrrole is used in excess to be sure that no butyllithium is present during the reaction with C02 the pentanoie acid formed from BuLi might give rise to difficulties in the purification of the pyrrole carboxylic acid. 

Formula C5H10O2 Name Pentanoie acid CAS 109-52-4 Mol. Weight 102.131700000... 

Initialiy, 4-bromobenzyl-cyanide is reacted with sodium amide and 2-chloropyridine to give bromophenyl-pyridyl acetonitrile. This is then reacted with sodium amide then dimethyi amino ethyl chloride to give 4.bromophenyl-dimethylamlnoethyl-pyrldyi acetonitrlie. This intermediate is then hydrolyzed and decarboxylated to bromphenirame using 80% H2SO4 at 140°-150°C for 24 hours. The brompheniramine maieate may be made by reaction with maleic acid in ethanol followed by recrystallization from pentanoi. 

Poncet-Vincent S. Desodorisation de fair par photocatalyse au contact de Ti02 degradation de l acide pentanoi que, du limonene et du sulfure d hydrogene. Thesis. France University of Lyon, 1999 309-399. 

PROBLEM 5.14 What three aikenes are formed in the acid-cataiyzed dehydration of 2-pentanoi ... 

Potassium pentoxide in 1-pentanoi is prepared by dissolving freshly cut potassium in dry, freshly-distilled 1-pentanol under nitrogen. The molarity of this solution may be determined by titration against standard aqueous acid. 

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