Patent ID: 6716787
Filing Date: 2004-04-06
Classification: C07F,C08G

Abstract:
A compound of the formula whereinM is lanthanide; RM is selected from the group consisting of hydrogen, halogen, alkyl, cycloalkyl, aryl, alkoxy, cycloalkoxy, aryloxy, alkylthio, cycloalkylthio, arylthio, amino, alkylamino, dialkylamino, cycloalkylamino, di(cycloalkyl)amino, alkyl(cycloalkyl)amino, arylamino, diarylamino, alkylarylamino and (cycloalkyl)arylamino; A and B are, independently, a carbon chain of 2 to 4 carbon atoms, optionally substituted by at least one member of the group consisting of substituted or non-substituted alkyl, cycloalkyl and aryl, the substituents being selected from the group consisting of halogen, alkyl, nitro and cyano; L1, L2 and L3 are independently E15 (R15)â€”, in which E15 is an element of group 15 of the Periodic Table and R15 is selected from the group consisting of i) hydrogen, ii) substituted or non-substituted alkyl, cycloalkyl and aryl, in which said substituent is selected from the group consisting of halogen, alkyl, nitro, and cyano; iii) E14RR1R11 wherein E14 is an element of group 14 of the Periodic Table and R, R1 and R11 are independently; selected from the group consisting of hydrogen, substituted or non-substituted alkyl, cycloalkyl, aryl, alkoxy, cycloalkoxy, aryloxy, alkylthio, cycloaikylthio and arylthio, in which said substituent is at least one member of the group consisting of halogen, alkyl, nitro and cyano; iv) â€”SO2Râ€²15 in which R115 is selected from the group consisting of halogen, alkyl, haloalkyl and aryl optionally substituted by at least one member of the group consisting of alkyl, haloalkyl and halogen.