Zobrazeno 1 - 10
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pro vyhledávání: '"M.S. Baymak"'
Autor:
M.S. Baymak, Petr Zuman
Publikováno v:
Tetrahedron. 63:5450-5454
Measurement of polarographic limiting currents at equilibria made it possible at pH 3–7 to simultaneously determine concentrations of benzaldehyde, of its hydrazone and of the carbinolamine derivative. The dependence of concentration of carbinolami
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c877ae8700fec44cfff8056f5533c155
https://doi.org/10.1016/j.tet.2007.04.034
https://doi.org/10.1016/j.tet.2007.04.034
Publikováno v:
Journal of Molecular Liquids. :24-28
In contrast to aliphatic and π -deficient N -heterocyclic aldehydes, which readily in aqueous solutions covalently add water, the majority of benzenoid aldehydes is present in aqueous solutions at less than 3% in the hydrated geminal diol form. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5da426d4ff7f33a88f5184332b4ea8bc
https://doi.org/10.1016/j.molliq.2006.08.056
https://doi.org/10.1016/j.molliq.2006.08.056
Publikováno v:
Baymak, M S, Celik, H, Lund, H & Zuman, P 2005, ' Experimental evidence of formation of imines in the course of reduction of hydrazones ' Journal of Electroanalytical Chemistry, vol. 581, pp. 284-293 .
The reduction of hydrazones is generally suggested to proceed through a reductive cleavage of the nitrogen–nitrogen bond followed by a reduction of the carbon–nitrogen bond. This sequence of reduction processes is here supported for fluorenone (V
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb6c1b490ce2c2816d859fd6d5e928c0
https://doi.org/10.1016/j.jelechem.2005.04.030
https://doi.org/10.1016/j.jelechem.2005.04.030
Publikováno v:
Electrochimica Acta. 50:1347-1359
Electroreduction of terephthalaldehyde (benzene-1,4-dicarboxaldehyde) (I) in protic media is complicated by acid–base and hydration–dehydration equilibria. At pH 0–5.5 the diprotonated form of I is reduced in a reversible two-electron step to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc63b8e8c206c7a297c291d3333b5de9
https://doi.org/10.1016/j.electacta.2004.07.053
https://doi.org/10.1016/j.electacta.2004.07.053
Akademický článek
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Autor:
M.S. Baymak, Petr Zuman
Publikováno v:
Tetrahedron Letters. 47:7991-7993
Electroanalytical techniques enable the detection and following of time changes of three intermediates (two carbinolamines and one monohydrazone) in the reaction of terephthalaldehyde with hydrazine at pH 7.3.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fae4388882605146c7e08ca35481a16
https://doi.org/10.1016/j.tetlet.2006.08.070
https://doi.org/10.1016/j.tetlet.2006.08.070
Publikováno v:
Tetrahedron Letters. 45:5113-5115
The shape of plots of limiting currents of some hydrazones and oximes as a function of pH, the slopes of E 1/2 –pH plots (particularly for benzaldehyde N , N , N -trimethylhydrazonium ion) and the presence of separate two or three waves in reductio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::200bcbccb6357b1b444a100b813a8b39
https://doi.org/10.1016/j.tetlet.2004.04.163
https://doi.org/10.1016/j.tetlet.2004.04.163
Publikováno v:
Electrochemistry Communications, Vol 5, Iss 4, Pp 334-336 (2003)
Polarographic current–voltage curves enabled distinguishing between the degree of covalent hydration of iso-, tere-, and orthophthalaldehydes. Hydration, which is negligible for isophthalaldehyde, strong for terephthalaldehyde and very strong for o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e79bf7c8ee51e19214c7accb7a2fb68
http://www.sciencedirect.com/science/article/pii/S138824810300064X
http://www.sciencedirect.com/science/article/pii/S138824810300064X
Publikováno v:
The journal of physical chemistry. B. 109(46)
Spectrophotometric and electroanalytical studies indicate that one of the formyl groups of terephthalaldehyde in aqueous solution is present in about 23% as a geminal diol. Stronger covalent hydration of CHO in terephthalaldehyde than in p-nitrobenza
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d83aa8bcae808bf3185604dae8196a02
https://pubmed.ncbi.nlm.nih.gov/16853849
https://pubmed.ncbi.nlm.nih.gov/16853849
Publikováno v:
Lund, H, Zuman, P, Celik, H & Baymak, M S 2006, ' Reduction of diprotonated form of aryl hydrazones ', Journal of Electroanalytical Chemistry, vol. 589, pp. 7 .
Hydrazones derived from aromatic aldehydes and ketones are reduced at pH 2 to about 8 in a four-electron step. The species reduced in this step bears two positive charges on adjacent nitrogen atoms. This has been proved by the pH-dependence of half-w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d806d67705c3dec6dc930aed52f5b76
https://pure.au.dk/portal/da/publications/reduction-of-diprotonated-form-of-aryl-hydrazones(d3ce9610-bc18-11db-bee9-02004c4f4f50).html
https://pure.au.dk/portal/da/publications/reduction-of-diprotonated-form-of-aryl-hydrazones(d3ce9610-bc18-11db-bee9-02004c4f4f50).html
