Polar organometallics

L. Brandsma and H. D. Verkuijsse, Preparative Polar Organometallic Chemistry. Vol. 2. Springer-Verlag, Berlin, 1990. 

L. Brandsma, H. Vcrkruijssc, Preparative Polar Organometallic Chemistry I, pp 3 23. Springer, Berlin 1987. 

L. Brandsma, H. D. Ver-krujisse, in Preparative Polar Organometallic Chemistry, Springer-Verlag, New York, 1987, Vol. 1, p. 50. 

Brandsma, L. Verkruijsse, H. "Preparative Polar Organometallic Chemistry Springer-Verlag New York, 1987 Vol. 1. 

SCHEME 22. Stereochemical outcome of the addition of polar organometallic compounds R"M to a-alkoxy aldehydes and ketones (G = protecting group)... 

The monomeric catalyst fraction showed similar R[ values as the metathesis products, which complicated the chromatographic separation and recycling procedure. Immobilization of the ruthenium catalyst on a dendrimer was anticipated to facilitate the chromatographic separation. Indeed, the presence of multiple (polar) organometallic sites on the dendrimer periphery resulted in stronger adsorption interactions between the dendritic catalyst and the silica and thus a better separation from the product. Two types of dendritic catalysts were prepared in which... 

Introduction of alkali metal into the flask containing liquid ammonia is most easily done with a powder funnel, which temporarily replaces a part of the equipment The cleaned lumps of metal are held above the funnel and cut into pieces (for handling alkali metals see our previous book "Preparative Polar Organometallic Chemistry , Springer-Verlag, 1987.)... 

Reactions of polar organometallic and Grignard reagents with a-haloethers generally proceed much more easily than the familiar SN2 displacements with alkyl halides. This may be explained by the large extent of Sjql character due to the ionization ... 

L. Brandsma, H.D. Verkruijsse, "Preparative Polar Organometallic Chemistry",... 

Carbozincations constitute undoubtedly one of the most fascinating fields of organozinc chemistry. Whereas alkenes and alkynes are not traditionally considered as electrophiles in polar organometallic chemistry, carbometallation reactions offer many synthetically... 

C. Lambert and P. v. R. Schleyer, Angew. Chem., 106,1187 (1994) Angew. Chetn. lnt. Ed. Engl., 33, 1129 (1994). Are Polar Organometallic Compounds Carbanions The Gege-nion Effect on Structure and Energies of Alkali-Metal Compounds. 

Hill, E. A. Richey, H. G. Rees, T. C. Intramolecular cleavages and double bond additions of polar organometallic compounds. J. Org. 

M. Schlosser, Struktur und Reaktivitat Polarer Organometalle. Springer-Verlag, Berlin and New York, 1973. 

Detailed information about the use, handling and disposal of strongly basic reagents and alkali metals is given in Chapter I of Preparative Polar Organometallic Chemistry, Vol. I [1],... 

A new and promising matrix for less polar organometallics and coordination compounds is p-nitrophenyl octyl ether. 

Schlosser, M. Struktur und Reaktivitat polarer Organometalle, Berlin, Springer-Verlag 1973... 

MI1 N. A. Nedolya, Novel Chemistry Based on Isothiocyanates and Polar Organometallics, Ph.D. Thesis, Utrecht University,... 

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