4117-33-3Relevant articles and documents
Metal-chelating 2,6-disubstituted pyridine compounds and their use
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, (2008/06/13)
Bifuncitonal chelating pyridine compound and its use for conferring chelating properties on organic compounds. The pyridine compound has the structure where (i) n is an integer 1 or 2, (ii) R1, R2 and R3 represent groups that have no electrons capable of significantly delocalizing or resonating with the pyridine ring, such as hydrogen, alkyl or aralkyl having an aliphatic carbon atom next to the pyridine ring; at least two of R1, R2 and R3 being hydrogen, iii) Z an Z' represent identical or different structures, each of which comprises at least one heteroatom having a free pair of electrons as that the said at least one heteroatom together with the nitrogen atom of the pyridine ring is capable of chelating a metal ion, iv) - - - - specifies that the group X-Y is a substituent replacing a hydrogen anywhere in the parent pyridine compound, and v) X-Y represents an organic group which is inert to said chelation, and in which iX is an inert and stable bridge and Y is a functional group or a residue of an organic compounbd that has properties conferred on the compound of formula II; said group X-Y being linked to the pyridine ring of formula II via an aliphatic carbon atom attached to and acid ester, salt and chelate forms thereof involving at least one of said chelating heteroatoms.
Spectrofluorometric method and compounds that are of value for the method
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, (2008/06/13)
A chelate formed between Eu3+, Tb3+, Dy3+ and Sm3+ and a compound having the formula STR1 where A1-6 are single carbon or nitrogen atoms; n=1 or 2; R1-6 is nothing when A is a nitrogen, and hydrogen or an organic group when A is a carbon; Z and Z' are selected among --N(CH2 CH2 COO-)2, --N(CH2 COO-)2, --N(CH2 OPO32-)2 and --N(CH2 PO32-)2 ;--species that --X--Y is a substituent replacing a hydrogen anywhere in the parent compound; and --X--Y represents an organic group containing no chelating heteroatom closer than four atoms from a chelating heteroatom in the parent compound and X is a stable bridge containing certain groups and Y is selected from (a) specified relative groups allowing coupling to other compounds and (b) residues of compounds participating in biospecific affinity reactions.
Metal-chelating 2,6-disubstituted pyridine compounds and their use
-
, (2008/06/13)
Bifunctional chelating pyridine compound and its use for conferring chelating properties on organic compounds. The pyridine compound has the structure where i) n is an integer 1 or 2, ii) R1, R2 and R3 represent groups that have no electrons capable of significantly delocalizing or resonating with the pyridine ring, such as hydrogen, alkyl or aralkyl having an aliphatic carbon atom next to the pyridine ring; at least two of R1, R2 and R3 being hydrogen, iii) Z and Z? represent identical or different structures, each of which comprises at least one heteroatom having a free pair of electrons so that the said at least one heteroatom together with the nitrogen atom of the pyridine ring is capable of chelating a metal ion, iv) ---- specifies that the group X-Y is a substituent replacing a hydrogen anywhere in the parent pyridine compound, and v) X-Y represents an organic group which is inert to said chelation, and in which X is an inert and stable bridge and Y is a functional group or a residue of an organic compound that has properties conferred on the compound of formula II; said group X-Y being linked to the pyridine ring of formula II via an aliphatic carbon atom attached to said ring,and acid ester, salt and chelate forms thereof involving at least one of said chelating heteroatoms.
