Identification of Some Oxygen-Containing Functional Groups by Reaction Gas Chromatography

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Abstract
The differential reactivities of boric acid and a series of metal hydrides toward alcohols, aldehydes, ketones, esters, and epoxides in solution and gas phase reactions has been studied. Reactive species were subtracted from the gas stream by the formation of non-volatile derivatives and could be identified by their absence in the chromatograms. LiBH4 and LiAIH4 were of equivalent reactivity in precolumn flow reactors, both subtracting all functional groups studied except ethers. NaBH4 was effective in differentiating between aldehydes and ketones while NaBH(OCH3)3 was effect in differentiating between ketones and all esters except acetates. Boric acid flow reactors were used in distinguishing primary and secondary alcohols from tertiary alcohols.

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