申请人:Imperial Chemical Industries PLC
公开号:US05410074A1
公开(公告)日:1995-04-25
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.
化合物的化学式(I)为##STR1##其中R.sup.1,R.sup.2和R.sup.3是烷基或芳基烷基,或者R.sup.1,R.sup.2和R.sup.3中的任意两个共同形成环烷基,Y为S或S(O)。通过在碱存在下将N-磷酸甲基甘氨酸与化合物的化学式(II)##STR2##反应可以制备化合物。其中m为0或1。化学式(I)的优选化合物为三甲基磺酸N-磷酸甲基甘氨酸,化学式(II)的优选化合物为三甲基磺酸氢硫酸盐。