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CIDNP as the proof of a radical mechanism of the reactions of Grignard reagents with diazonium salts

✍ Scribed by V. I. Savin; I. D. Temyachev; Yu. P. Kitaev

Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
191 KB
Volume
5
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The PMR spectrum recorded during the reaction of tert‐butylmagnesium chloride with p‐chlorophenyl diazonium tetrafluoborate shows the CIDNP effect in the spectra of the the reaction products. Enhanced absorption and emission (the multiplet effect) has been observed for the protons of the vinyl group of isobutylene and the methyl protons of isobutane. The reaction of these diazonium salts with benzylmagnesium chloride results in only one polarised product, chlorobenzene. Such a polarisation proves the radical mechanism of the reaction which started with one‐electron transfer from the Grignard reagent to the diazonium salt.

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