FIELD: chemistry.
SUBSTANCE: invention relates to ligands for transition metal complexes suitable for use in the chemical industry, the general formula:
selected from 4,5-bis(diphenylphosphino)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-1-(hexyl)-1H-1,2,3-triazole, 4,5-bis (diphenylphosphino)-1-(2-octylthio)ethyl-1H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(methyl)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(butyl)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(hexyl)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(octyl)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(allyl)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(hex-5-en-1-yl)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(cyanomethyl)-2H-1,2,3-triazole, 4,5-bis(diphenylphosphino)-2-(vinylbenzyl)-2H-1,2,3-triazole, ethyl(2-(4,5-bis(diphenylphosphino)-2H-1,2,3-triazol-2-yl)acetate), 1-(4,5-bis(diphenylphosphino)-2H-1,2,3-triazol-2-yl)ethan-1-one. Mentioned ligand is obtained in three stages: in the first step, the synthesis oxide difosfinoatsetilena from acetylene and hlordifenilfosfina followed by oxidation difosfinoatsetilena hydrogen peroxide, the second - carry the product reacted with an appropriate azide or a mixture of organic haloganide with sodium azide, the third - is reduced with trichlorosilane to chromatographic separation desired product. The transition metal complex with said ligand receive processing metal halide selected from CrCl3, FeCl2, NiBr2 or PdCl2, corresponding ligand solution in tetrahydrofuran under argon followed by degassing and stirring the resulting suspension for 17-18 hours at room temperature, isolation and drying of the desired product.
EFFECT: provides novel ligands effective for transition metal complexes, efficient methods for their preparation and the preparation of complexes based on them in a high yield of desired products.
6 cl, 13 ex
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Authors
Dates
2017-04-18—Published
2015-06-30—Filed