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Structure of grignard reagents and organolithium compounds

โœ Scribed by Gideon Fraenkel; David G. Adams; James Williams

Book ID
104241906
Publisher
Elsevier Science
Year
1963
Tongue
French
Weight
279 KB
Volume
4
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

several problems concerning the structure of kignard reagent: and organolithium compounds have been studied with the aid of nuclear magnetic resonance spectroscopy, NM&; they are: the ionic character of the carbon metal bonds, the rates of carbanion inversion, the rates of carbon metal exchange and the electron hybridization in the C-H bond in RCHM.

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dence for the rearrangement (2)+( 7). However, this isomerization can also be detected when (la) is used as starting material: Thus, on reaction of (la) with 6 equivalents of potassium tert-butoxide in THF at 35"C, the enol ether (10) is obtained in 44% yield. Its formation can be explained in terms