Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Patent
1984-06-13
1986-08-05
Sneed, Helen M. S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C07F 500
Patent
active
046044736
ABSTRACT:
A method of producing a trialkyl gallium compound (R.sub.A).sub.3 Ga, where R.sub.A is selected from methyl and ethyl, includes the step of reacting a gallium trihalide with a Grignard reagent of formula R.sub.A Mg Q, where Q is a halogen, the reaction being carried out in the presence of an ether of the formula R.sub.1 R.sub.2 O having a boiling point at least 50 Celsius degrees above that of the trialkyl gallium compound (R.sub.A).sub.3 Ga, wherein R.sub.1 and R.sub.2 are organic radicals at least one of which has at least 5 carbon atoms.
The organic radicals R.sub.1 and R.sub.2 may be aromatic and/or aliphatic radicals. They are preferably alkyl or phenyl radicals. Preferably R.sub.1 R.sub.2 O is an ether having a boiling point more than 100.degree. C. above that of the trialkyl gallium compound. The radicals R.sub.1 and R.sub.2 may each independently have from 1 to 14 carbon atoms but preferably together R.sub.1 and R.sub.2 have between seven and twelve carbon atoms inclusive.
Desirably, R.sub.1 R.sub.2 O is di-isopentyl ether (3,3-dimethylpropyl) ether. Other examples of R.sub.1 R.sub.2 O are diphenyl ether and anisole (methylphenyl ether). Preferably, Q is iodine and the gallium trihalide is a chloride.
REFERENCES:
patent: 1938179 (1933-12-01), Groll
patent: 3318931 (1967-05-01), Dotzer et al.
Kharasch et al., Grignard Reactions of Nonmetallic Substances, Prentice-Hall, Inc., N.Y. pp. 45-49 (1954).
Nesmeyanov et al., The Organic Compounds of Boron, Aluminum, Gallium, Indium and Thallium, North-Holland Publ. Co., pp. 506-507 (1967).
Dennis et al., JACS 54 182 (1932).
Chemical Abstracts 27, 2646-264 (1933).
Cole-Hamilton David J.
Jones Anthony C.
Mullin John B.
Sneed Helen M. S.
The Secretary of State for Defence in Her Britannic Majesty's Go
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