Thus, when 2-methyl-1-butanol reacted with benzylamine, the corresponding amide was obtained in 70% yield, with the rest of the alcohol being converted to the ester 2-methylbutyl 2-methylbutanoate (Table 1, entry 4).A similar pattern was also observed when 2-methylhexylamine . Download figure. Protonation of the alkoxide as part of an acidic work-up creates the 3o alcohol product. You can also react ammonia with esters to prepare primary amides. Our work opens up a vast library of the utilization of biomass alcohol to high-value N-containing chemicals via an electrocatalytic C-N coupling reaction. Addition of a proton can occur in two ways, to give \(7\) or \(8\): The first of these, \(7\), has \(\ce{CH_3OH}\) as a leaving group and reverts back to the conjugate acid of ethanal. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. In general, the ease of esterification for alcohols, \(\ce{ROH}\), by the mechanism described is primary \(\ce{R}\) \(>\) secondary \(\ce{R}\) \(>\) tertiary \(\ce{R}\) with a given carboxylic acid. Thus ethanol reacts very slowly with methyl iodide to give methyl ethyl ether, but sodium ethoxide in ethanol solution reacts quite rapidly: In fact, the reaction of alkoxides with alkyl halides or alkyl sulfates is an important general method for the preparation of ethers, and is known as the Williamson synthesis. The acid ionization constant (Ka) of ethanol is about 10 18, slightly less than that of water. 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\newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), Reaction with Primary Amines to form Imines, Reaction with Secondary Amines to form Enamines, 17.10: Deoxygenation of the Carbonyl Group, Reactions involving other reagents of the type Y-NH2.
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