Process for preparing tertiary alkylphosphorodichloridites

Details Process for preparing tertiary alkylphosphorodichloridites Process for preparing tertiary alkylphosphorodichloridites

1977-03-28

1978-10-17

Sutto, Anton H.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260960, C07F 9146

Patent

active

041209176

ABSTRACT:
Tertiary alkyl phosphorodichloridites, characterized by the formula: ##STR1## where R.sup.1, R.sup.2 and R.sup.3 may be alkyl having from about 1 to about 4 carbon atoms, aryl having from about 6 to about 8 carbon atoms, or aralkyl having from about 7 to about 10 carbon atoms, however, at least one of R.sup.1, R.sup.2 and R.sup.3 must be alkyl, as new compounds, and synthesis thereof by reacting, at temperatures of 0.degree. C or less, a tertiary alcohol, a tertiary amine scavenger, and phosphorus trichloride, the PCl.sub.3 being employed in amounts in excess of the stoichiometric amount needed to react with the alcohol are provided. Both chlorines of the tertiary alkylphosphorodichloridites so produced may be relaced by RX.sup.- groups from alcohols (ROH), thiols (RSH), or amines (RR.sup.6 NH) in order that trisubstituted phosphite compounds of the formula: ##STR2## are produced. Disubstituted phosphorus acids of the formula: ##STR3## may be produced by heating the trisubstituted phosphite compounds. The RX.sup.- groups are retained as the substituents of the phosphorus acid compounds. Such phosphorus acids are extremely useful in lubricating media as antiwear agents, in insecticides and as additives in rubber.

REFERENCES:
patent: 3309431 (1967-03-01), Olivette et al.
Eliseenkov et al., "Chem. Abs.", vol. 64, (1966), 11074-11075.
Abramov et al., "Chem. Abs.", vol. 51, (1957), 15440-15441.

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