Method of preparing di-organo-magnesium compounds

Details Method of preparing di-organo-magnesium compounds Method of preparing di-organo-magnesium compounds

1980-02-21

1982-05-11

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 302

Patent

active

043293018

ABSTRACT:
A method of preparing a di-organo-magnesium compound of the formula R.sub.2 M.sub.g in which R is an organic radical bonded to Mg by carbon, comprising reacting magnesium hydride MgH.sub.2 or magnesium and hydrogen with an olefin in the presence of a catalyst comprising a compound of a transition metal of the 4th to 8th secondary group and an organometallic compound or a hydride of a metal of the 1st to 3rd principal groups of the periodic system. Advantageously there is also present a polycyclic aromatic compound or a tertiary amine as activator and the reaction is effected in the presence of tetrahydrofuran as solvent at a pressure of about 1 to 300 bars at about 0.degree. to 200.degree. C., the atomic ratio of Mg:transition metal being from about 10.sup.4 to 10:1, the molar ratio of transition metal compound:organometal compound or metal hydride being from about 0.1 to 10:1, the molar ratio of olefin:magnesium being from about 2 to 10:1 and the olefin being of the formula CH.sub.2 .dbd.CHR' wherein R' is H or an alkyl, cyclo-alkyl, aryl or aralkyl group.

REFERENCES:
patent: 2959625 (1960-11-01), Blitzer et al.
patent: 2985692 (1961-05-01), Podall
patent: 3354190 (1967-11-01), Ramsden
patent: 3388179 (1968-06-01), Ramsden
patent: 3706809 (1972-12-01), Moroe et al.
Chemical Abstracts, 53, 4134g (1959) Abstract of Ital. 548183, Sep. 19, 1956.

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