Synthesis and reactivity of 3, 5-dimethyl-4-aminomethylpyrazole ligands. An entry to new water-soluble pyrazolate rhodium (I) complexes
The new pyrazoles 3, 5-dimethyl-4-(ethylamino) methylpyrazole (HL1) and 3, 5-dimethyl-4-
(isopropylamino) methylpyrazole (HL2), both containing aminoalkyl groups at position 4
have been prepared by aminoalkylation of 3, 5-dimethylpyrazole and by the reaction
between 1-chloromethyl-3, 5-dimethylpyrazolium chloride and NH2R amines. The reaction
between HL1, HL2 and [RhCl (COD)] 2 resulted in complexes of formula [Rh2 (HL1) 2
(COD) 2] Cl2 (1) and [Rh2 (HL2) 2 (COD) 2] Cl2 (2), which contained the pyrazole ligands in …
(isopropylamino) methylpyrazole (HL2), both containing aminoalkyl groups at position 4
have been prepared by aminoalkylation of 3, 5-dimethylpyrazole and by the reaction
between 1-chloromethyl-3, 5-dimethylpyrazolium chloride and NH2R amines. The reaction
between HL1, HL2 and [RhCl (COD)] 2 resulted in complexes of formula [Rh2 (HL1) 2
(COD) 2] Cl2 (1) and [Rh2 (HL2) 2 (COD) 2] Cl2 (2), which contained the pyrazole ligands in …
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