| 摘要 |
<p>The present invention relates to compounds of formula (I) wherein R1 is selected from hydrogen and -R4-R5 where R4 is selected from nothing, C1-C20 linear or branched alkylene, C3-C20 cycloalkylene, C6-C20 arylene, C7-C20 alkarylene and C7-C20 aralkylene; and R5 is one of hydrogen, hydroxy, -CO2Z, phenyl, hydroxyphenyl, pyridyl, nitrophenyl, furyl and thienyl; R2 and R3 are independently selected from a group of the formula -R4-R6; where R4 is as defined above and R6 is one of hydrogen, hydroxy, -CO2Z, -CH(CO2Z)-CH2-CO2Z and NR7R8; where R7 and R8 are independently selected from a group of the formula: -(CH2)k-R9; where k=0-20 and R9 is one of hydrogen, hydroxy, -CO2Z, and -CH(CO2Z)-CH2-CO2Z; wherein y is selected from -CO2Z, -SO3Z and -C N; and wherein each Z is independently selected from hydrogen, alkali metal, ammonium and substituted ammonium, to processes for making these compounds, and to the use of these compounds in a variety of applications involving chelating or sequestration.</p> |
