Investigation of conformational and vicinal optical activity of mono(S-aminocarboxylato)cobalt(III) complexes

Juranić, Nenad; Andjelković, Katarina; Malinar, M.J.; Ćelap, M.B.; Vučić, M.; Vũcelić, D.; Prelesnik, Β.

doi:10.1016/s0277-5387(00)86009-x

Cited by 6 publications

(2 citation statements)

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“…Several reagents have previously been used to transform the monosubstituted hydrazines to the corresponding azides: 8 nitrous acid, 9 alkyl nitrites, 10 nitrosyl chloride, 10a,11 nitrosyl tetraflouroborate, 12 clayfen, 13 and dinitrogen tetroxide. 14 We were aware of numerous examples where SHNC was employed for the synthesis of various Co(III) complexes by the displacement of the nitro groups by amine ligands using ammonia, 15 monodentate, bidentate, or multidentate amines, 16 amino acids, 17 or the mixture of an amine and an amino acid. 18 The nitrosation of the amine function of those substrates with SHNC was not observed.…”

Section: Resultsmentioning

confidence: 99%

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Nitrosation with Sodium Hexanitrocobaltate(III)

1997

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Na(3)Co(NO(2))(6) has been investigated as a new reagent for the nitrosation of various substrates containing an amino functionality. Reactions took place in an aqueous solution of the reagent. The pH of the reaction mixture remained in the range 4.3-5. Thus, hydrazides were transformed to the corresponding acyl azides, and the reactions with arenesulfonyl hydrazines afforded arenesulfonyl azides. Treatment of aromatic amines with Na(3)Co(NO(2))(6) gave 1,3-diaryltriazenes in excellent yields; coupling of the initially formed diazo compound to the electron rich aromatic ring was also observed. Nitrosation of aliphatic amines was not possible due to complex formation with the reagent.

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Section: Resultsmentioning

confidence: 99%

“…We were aware of numerous examples where SHNC was employed for the synthesis of various Co(III) complexes by the displacement of the nitro groups by amine ligands using ammonia, monodentate, bidentate, or multidentate amines, amino acids, or the mixture of an amine and an amino acid …”

Section: Resultsmentioning

confidence: 99%