Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
438 words
A metal complex which comprises a metal from the first or second series of the main group of transition metals in co-ordination with a chiral Schiff base of the formula: ##STR25## wherein at least the carbon atom of the monosaccharide to which carbon atom the iminyl nitrogen atom is attached is asymmetric, at least one of the carbon atoms adjacent the said carbon atom bears a hydroxyl group, R 1 and R 6 which may be the same or different, are hydrogen or lower alkyl, R 2 is hydrogen or lower alkyl or where n is 1 and R 3 is --CH 2 OR 10 , OR 2 and OR 10 together form an acetal or ketal residue, R 3 is --CH 2 OR 10 in which R 10 is hydrogen, lower alkyl or where n is 1, OR 2 and OR 10 together form an acetal or ketal residue, R 4 is hydrogen or --CH 2 OR 10 in which R 10 is hydrogen, or a lower alkyl, R 5 is hydrogen or OR 1 provided that both R 4 and R 5 are not hydrogen, R 7 and R 8 , which may be the same or different, are hydrogen, or lower alkyl, or where p is 1, may with the cyclic ring to which CR 7 R 8 is attached form a fused system, R 9 is hydrogen, alkyl, aralkyl, aryl or alkaryl, J is a chain of 3 or 4 atoms which chain is chosen from the group consisting of ##STR26## and with the group C A forms a substantially planar cyclic conjugated system containing (4z+2)π electrons, where z is a positive integer, A is nitrogen, or ##STR27## L each of which may be the same or different, represents a substituent attached to a carbon atom in the chain J and is (a) hydrogen, alkyl, aralkyl, aryl, alkaryl, hydroxy, OR 11 , OCOR 11 , CHO, COR 11 , CO 2 H, CO 2 R 11 , CN, CONH 2 , NH 2 , NHR 11 , NR 11 2 , NHCOR 11 , NO 2 , SH, SR 11 , SOR 11 , SO 3 R 11 and a halogen atom, where R 11 is alkyl, aralkyl, or aryl, or (b) where p is 0, the L's on two adjacent atoms in the chain J may, together with the ring ##STR28## form a fused bicyclic system, m is 0 to 1, n is 0 or 1, provided that n plus m is 0 or 1 p is 0, 1 or 2, and q is the number of carbon atoms in the chain J.
Claim 2
Dependent Claim
438 words
A metal complex which comprises a metal from the first or second series of the main group of transition metals in co-ordination with a chiral Schiff base of the formula: ##STR25## wherein at least the carbon atom of the monosaccharide to which carbon atom the iminyl nitrogen atom is attached is asymmetric, at least one of the carbon atoms adjacent the said carbon atom bears a hydroxyl group, R 1 and R 6 which may be the same or different, are hydrogen or lower alkyl, R 2 is hydrogen or lower alkyl or where n is 1 and R 3 is --CH 2 OR 10 , OR 2 and OR 10 together form an acetal or ketal residue, R 3 is --CH 2 OR 10 in which R 10 is hydrogen, lower alkyl or where n is 1, OR 2 and OR 10 together form an acetal or ketal residue, R 4 is hydrogen or --CH 2 OR 10 in which R 10 is hydrogen, or a lower alkyl, R 5 is hydrogen or OR 1 provided that both R 4 and R 5 are not hydrogen, R 7 and R 8 , which may be the same or different, are hydrogen, or lower alkyl, or where p is 1, may with the cyclic ring to which CR 7 R 8 is attached form a fused system, R 9 is hydrogen, alkyl, aralkyl, aryl or alkaryl, J is a chain of 3 or 4 atoms which chain is chosen from the group consisting of ##STR26## and with the group C A forms a substantially planar cyclic conjugated system containing (4z+2)π electrons, where z is a positive integer, A is nitrogen, or ##STR27## L each of which may be the same or different, represents a substituent attached to a carbon atom in the chain J and is (a) hydrogen, alkyl, aralkyl, aryl, alkaryl, hydroxy, OR 11 , OCOR 11 , CHO, COR 11 , CO 2 H, CO 2 R 11 , CN, CONH 2 , NH 2 , NHR 11 , NR 11 2 , NHCOR 11 , NO 2 , SH, SR 11 , SOR 11 , SO 3 R 11 and a halogen atom, where R 11 is alkyl, aralkyl, or aryl, or (b) where p is 0, the L's on two adjacent atoms in the chain J may, together with the ring ##STR28## form a fused bicyclic system, m is 0 to 1, n is 0 or 1, provided that n plus m is 0 or 1 p is 0, 1 or 2, and q is the number of carbon atoms in the chain J.
Claim 3
Dependent Claim
57 words
A metal complex as claimed in claim 1 wherein m is 0, n is 1, R 1 , R 4 and L are hydrogen, R 3 is CH 2 OR 10 , R 5 is lower alkoxy, and (a) J is ##STR29## and A is nitrogen or ##STR30## or (b) J is ##STR31## and A is --NH--.
Claim 4
Dependent Claim
25 words
A metal complex as claimed in claim 2 wherein p is 0, R 9 is hydrogen, J is ##STR32## and A is nitrogen or ##STR33##
Claim 5
Dependent Claim
20 words
A metal complex as claimed in claim 1 in which the asymmetric carbon atom has the R or S configuration.
Claim 6
Dependent Claim
58 words
A metal complex as claimed in claim 5 prepared from a Schiff base which has the structure represented by the modified Haworth projection formula: ##STR34## where R 5 is lower alkoxy, R 2 and R 10 are both hydrogen or together form a divalent hydrocarbyl group or R 2 is lower alkyl and A is nitrogen or COH.
Claim 7
Dependent Claim
35 words
A metal complex as claimed in claim 1 in which the transition metal is selected from the group consisting of copper (II), chromium (II), manganese (II), iron (II), cobalt (II), nickel (II), and palladium (II).
Claim 8
Dependent Claim
16 words
A metal complex as claimed in claim 6 in which the transition metal is copper (II).
Claim 9
Dependent Claim
66 words
A metal complex as claimed in claim 6 which has the structure: ##STR35## where R 1-9 , J, L, m, n, p and q have the meanings previously ascribed to them, E is a monodentate ligand derived from a neutral molecule, G is nitrogen, ═C--O, --N-- or ═N→O, and M is a metal from the first or second series of the main group of transition metals.
Claim 10
Dependent Claim
49 words
A process for preparing a chiral transition metal complex as claimed in claim 1 which process comprises reacting a chiral Schiff base as defined in claim 12 with a suitable transition metal which is in the form of a salt of an inorganic acid, a complex, or a carboxylate.