Chemistry of carbon compounds – Dipeptides – e.g. – aspartame – anserine – carnosine – etc.
Patent
1975-03-17
1976-08-17
Raymmond, Richard L.
Chemistry of carbon compounds
Dipeptides, e.g., aspartame, anserine, carnosine, etc.
260403, 260920, 260936, 260971, 260973, 260978, C07F 932
Patent
active
039754650
ABSTRACT:
A heterocyclic phosphorus mono-, di- or polyester has the constitution of the product prepared by reacting an intermediate of specified type with a di- or polyol or derivative thereof capable of yielding the di- or polyol on hydrolysis, said intermediate of specified type being a heterocyclic phosphorus compound having the constitution of the compound prepared by reacting an olefin polymer or copolymer having at least 50 carbon atoms and containing olefinic unsaturation with a phosphorus trihalide in the presence of a Friedel-Crafts catalyst, preferably consisting of an aluminium halide, to form a reaction product having halogen atoms attached to phosphorus, and thereafter reacting the reaction product with a hydroxy compound, preferably water or methanol, to remove one or both of the halogen atoms attached to the phosphorus atom. Lubricating compositions containing the mono-, di- or polyesters of the invention are also described.
REFERENCES:
patent: 2974158 (1961-03-01), Lanham
patent: 3092650 (1963-06-01), McBride et al.
patent: 3729532 (1973-04-01), Jungermann et al.
Crook Monty Frederick
Davis Bryan Terence
Elliott John Scotchford
Edwin Cooper & Company Limited
Johnson Donald L.
Linn Robert A.
Odenweller Joseph D.
Raymmond Richard L.
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