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Organometallic compounds, action

The three phases that are present in the Ziegler-Natta polymerisation are (i) the monomer (ii) the solvent and (iii) the catalyst. Reactions take place at certain points on the surface of catalyst particles. The polymer molecule grows as the monomer units join the chain where earlier monomer is attached to the catalyst particle. The precise nature of the action of catalyst is not yet known. However, the first step in the polymerisation process proposed is the formation of a monomer-catalyst complex between the organometallic compound and the monomer. [Pg.256]

Ultrasound is widely used for the preparation of organometallic compounds from reactive metals [67]. Here the mode of action of ultrasound is twofold ... [Pg.93]

Some Reactions of Aromatic Heterocycles Involving the Catalytic Action of the Cyanide Ion E. Hayashi, Shizuoka Yakka Daigaku Kaigaku, 25-Shunen Kinen, 1978, 1-12. Reactions of Organometallic Compounds in the Heterocyclic Field A. Marxer, Led. Heterocycl. Chem., 1976, 3, 131-139. [Pg.68]

Organometallic compounds possessing carbon-tin bonds can resist he action of TPAP during the oxidation of alcohols.99... [Pg.235]

Keywords Bioorganometallic chemistry Cancer chemotherapy Mode of action Organometallic compounds Protein binding Targeted drugs... [Pg.57]

The chief by-products of the reaction are symmetrical ketones and tertiary alcohols formed by the action of the organometallic compound on the carboxylic acid salt. The amount of these products is greatly diminished by jetwise addition of the organometallic reagent to excess powdered Dry Ice (spray technique). ... [Pg.217]

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