Process for preparing sulfonium or sulfoxonium salts of N-phosph

Details Process for preparing sulfonium or sulfoxonium salts of N-phosph Process for preparing sulfonium or sulfoxonium salts of N-phosph

1993-12-10

1995-04-25

Dees, Jose G.

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

Organic compounds

Phosphorus acids or salts thereof

C07F 928, C07F 938

Patent

active

054100747

ABSTRACT:
A compound of formula (I) ##STR1## where R.sup.1, R.sup.2, and R.sup.3 are alkyl or aralkyl or any two of R.sup.1, R.sup.2, and R.sup.3 together form a cycloalkyl ring and Y is S or S(O) is prepared by reacting N-phosphonomethylglycine with a compound of formula (II) ##STR2## where m is 0 or 1 in the presence of a base. A preferred compound of formula (I) is trimethylsulphonium N-phosphonomethylglycine and a preferred compound of formula (II) is trimethylsulphonium hydrogen sulphate.

REFERENCES:
patent: 4315765 (1982-02-01), Large
patent: 4431594 (1984-02-01), Broadhurst et al.
patent: 4542023 (1985-09-01), Lacroix et al.
patent: 5300680 (1994-04-01), Jones et al.

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