Patent ID: 6794526
Filing Date: 2004-09-21
Classification: C07F

Abstract:
A process for the preparation of a manganese complex of salen compounds of formula in which formulaeA is an anion; n, m and p are each independently of the others 0, 1, 2 or 3, R, R1 and R1â€² are each independently of the others cyano; halogen; OR4 or COOR4, wherein R4 is hydrogen or linear or branched C1-C4alkyl; nitro; linear or branched C1-C8alkyl; linear or branched partially fluorinated or pertfluorinated C1-C8alkyl; NR5R6, wherein R5 and R6 are identical or different and are each independently of the other hydrogen or linear or branched C1-C12alkyl; or linear or branched C1-C8alkyl-R7, wherein R7 is a radical NH2, OR4, COOR4 or NR5R6 as defined above; or -CH2â€”NâŠ•R4R6R7 or â€”NâŠ•R4R5R8, wherein R.4, R5 and R6 are as defined above, R2 and R3 are each independently of the other hydrogen, linear or branched C1-C4alkyl or unsubstituted aryl or aryl that is substituted by cyano; by halogen; by OR4 or COOR4, wherein R4 is hydrogen or linear or branched C1-C4alkyl; by nitro; by linear or branched C1-C8alkyl; by NHR5 or NR5R6, wherein R5 and R6 are identical or different and are each hydrogen or linear or branched C1-C12alkyl or wherein R5 and R6 together with the nitrogen atom linking them form a 5-, 6- or 7-membered ring that may contain further hetero atoms; or by linear or branched C1-C8alkyl-R7, wherein R7 is a radical NH2, OR4, COOR4 or NR5R6 as defined above; or by â€”NâŠ•R4R5R6, wherein R4, R5 and R6 are as defined above, R8 radicals are each independently of the others hydrogen or linear or branched C1-C4alkyl, Y is a linear or branched alkylene radical of formula â€”[C(R4)2]râ€”, wherein r is an integer from 1 to 8 and the R4 radicals are each independently of any other(s) as defined above; â€”CX&boxH;CXâ€”, wherein X is cyano, linear or branched C1-C8alkyl or di(linear or branched C1-C8alkyl)amino; â€”(CH2)qâ€”NR4â€”(CH2)qâ€”, wherein R4 is as defined above and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene radical of formula: wherein R9 is hydrogen, SO3H, CH2OH or CH2NH2, wherein in formula (1) the phenyl rings may together carry no more than three tert-butyl substituents, and wherein, when Y is 2-hydroxypropylene and m and n are each 0, R2 and R3 may not both be H, which comprises reacting a ligand of formula wherein R, R1, R1â€², R2, R3, R4, R5, R6, R7, R8, R9, Y, A, n, m and p are as defined for formulae (1), (2) and (3), with a manganese(II) salt in dimethylformamide as solvent.