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Rapid injection NMR: A simple technique for the observation of reactive intermediates

✍ Scribed by John F. McGarrity; Jacques Prodolliet; Timothy Smyth

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
642 KB
Volume
17
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

A system has been designed for the NMR observation (at 60 MHz) of unstable intermediates, with half‐lives of 100 ms, at concentration levels above 10^−2^ M. Rapid mixing can be achieved in less than 40 ms and a series of eight spectra acquired in less than 1.08 s. Low temperature operation is straightforward. Reactive intermediates involved in the reaction of methylamine with 2,4,6,‐trinitroanisole and the acid‐catalysed hydrolysis of 1,1‐diethoxy‐2,3‐diphenylcycloprop‐2‐ene were identified, and in a kinetic application, the rate of hydrolysis of trimethyloxonium tetrafluoroborate was measured.

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