Intermediate compounds usable for the preparation of herbicides

Details Intermediate compounds usable for the preparation of herbicides Intermediate compounds usable for the preparation of herbicides

1989-06-07

1991-08-20

Evans, J. E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus acids or salts thereof

71 87, C07F 938

Patent

active

050416260

ABSTRACT:
The invention relates to compounds of formula: ##STR1## in which R.sup.4 is a group which can be hydrogenolyzed, R and R.sup.1 are alkyl groups, X.sup.- is an HSO.sub.4.sup.-, Cl.sup.- or R.sup.7 SO.sub.3.sup.- anion and to a process for the preparation of the compounds of formula (I) by the hydrolysis of the compounds of formula (II): ##STR2## in which R.sup.2 and R.sup.3 are alkyl groups linked to the oxygen via a secondary carbon, using sulphuric or hydrochloric acid. The invention also relates to the use of compounds of formula (I) for the preparation of herbicide by the hydrogenolysis of the compounds of formula (I).

REFERENCES:
patent: 3927080 (1975-12-01), Gaertner
patent: 4422982 (1983-12-01), Subramanian
patent: 4675429 (1987-06-01), Borrod et al.
patent: 4755614 (1988-07-01), Corbet

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