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Etudes sur les composés organométalliques. XI [1]. Action du tétrabutoxytitane sur des solutions de Grignard

✍ Scribed by George Jon Dubsky; André Jacot-Guillarmod

Publisher
John Wiley and Sons
Year
1970
Tongue
German
Weight
452 KB
Volume
53
Category
Article
ISSN
0018-019X

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✦ Synopsis

En hommage au professeur Ch.G. Boissonnas, l'occasion de son 70me anniversaire (4/9/70) Summary. Various Grignard reagents and their diorganomagnesium complexes with ether or pyridine have been reacted with henzophenone, using different mole ratios and orders bf addition. Analysis of the reaction products has provided information as to probable reaction mechanisms of addition and reduction. A monomeric diorganomagnesium reagent, favoured either by addition of the reagent to the ketone or by complexation of the reagent with pyridine, enhances if possible the reduction reaction. L'addition 1,2 du r6actif de Grignard B une cCtone peut &re accompagnCe d'autres rCactions, notamment rbduction de la fonction carbonyle en alcool tertiaire (selon I) ou conversion de celle-ci en un groupement Cnol salifi6 (selon 11).

(11) (RCH,)R"C=O+ RMgX -+ R'CH=C(OMgX)R"+ R H

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