Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1983-01-13
1984-02-14
Evans, J. E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
26050112, C07F 938
Patent
active
044315945
ABSTRACT:
A process for the preparation of sulfonium or sulfoxonium salts of N-phosphonomethylglycine which comprises:
(1) reacting N-phosphonomethylglycine, a compound of the formula ##STR1## with a compound selected from the group consisting of those having the formula ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and are alkyl groups having from 1 to 4 carbon atoms or aromatic alkyl groups, X is chloride, bromide or iodide and Z is an electron pair or oxygen, or ##STR3## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and are alkyl groups having from 1 to 4 carbon atoms and are the same as in (a) above, R.sub.4 is an alkyl group having from 1 to 12 carbon atoms, aromatic or aromatic alkyl groups, X is chlorine or iodine, and Y is nitrogen or phosphorus, said reaction being conducted in the presence of a trialkylamine of the formula
REFERENCES:
patent: 2271707 (1942-02-01), Munz et al.
patent: 2831019 (1958-04-01), Erskine
patent: 4147719 (1979-04-01), Franz
patent: 4196143 (1980-04-01), Strycker
patent: 4315765 (1982-02-01), Large
patent: 4341549 (1982-07-01), Large et al.
Broadhurst Michael D.
Heather James B.
Evans J. E.
Martin Paul R.
Stauffer Chemical Company
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