Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides
The rate constants for the reaction of three isomeric pyridine mono-carbocylic acid N-oxides with diazodiphenylmethane were determined at 30 ºC in thirty two protic and aprotic solvents by the well known UV spectrophotometric method. The rate constants are generally higher than for pyridine mono-car...
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| Format: | Article |
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Serbian Chemical Society
2006-02-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.shd.org.yu/HtDocs/SHD/vol71/No2/JSCS_V71_No2-01.pdf |
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| author | MILICA MISIC-VUKOVIC ALEKSANDAR D. MARINKOVIC BRATISLAV Z. JOVANOVIC SASA Z. DRMANIC |
| author_facet | MILICA MISIC-VUKOVIC ALEKSANDAR D. MARINKOVIC BRATISLAV Z. JOVANOVIC SASA Z. DRMANIC |
| author_sort | MILICA MISIC-VUKOVIC |
| collection | DOAJ |
| description | The rate constants for the reaction of three isomeric pyridine mono-carbocylic acid N-oxides with diazodiphenylmethane were determined at 30 ºC in thirty two protic and aprotic solvents by the well known UV spectrophotometric method. The rate constants are generally higher than for pyridine mono-carboxylic acids in a similar range of solvents, except for picolinic acid N-oxide, and also higher in protic than in aprotic solvents. The determined rate constants were correlated with solvent parameters using the Kamlet–Taft solvatochromic equation bymeans ofmultiple regression analysis. The sing of the equation coefficients were in agreement with the postulated reaction mechanism. The mode of the in fluences of the solvent is discussed on the basis of the correlation coefficients, taking into account the specific structures of the pyridine mono-carboxylic acid N-oxides. |
| first_indexed | 2024-04-13T10:13:35Z |
| format | Article |
| id | doaj.art-f047dd4fd3c04b34b3066b27a289eba7 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-04-13T10:13:35Z |
| publishDate | 2006-02-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-f047dd4fd3c04b34b3066b27a289eba72022-12-22T02:50:50ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392006-02-0171289101Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxidesMILICA MISIC-VUKOVICALEKSANDAR D. MARINKOVICBRATISLAV Z. JOVANOVICSASA Z. DRMANICThe rate constants for the reaction of three isomeric pyridine mono-carbocylic acid N-oxides with diazodiphenylmethane were determined at 30 ºC in thirty two protic and aprotic solvents by the well known UV spectrophotometric method. The rate constants are generally higher than for pyridine mono-carboxylic acids in a similar range of solvents, except for picolinic acid N-oxide, and also higher in protic than in aprotic solvents. The determined rate constants were correlated with solvent parameters using the Kamlet–Taft solvatochromic equation bymeans ofmultiple regression analysis. The sing of the equation coefficients were in agreement with the postulated reaction mechanism. The mode of the in fluences of the solvent is discussed on the basis of the correlation coefficients, taking into account the specific structures of the pyridine mono-carboxylic acid N-oxides.http://www.shd.org.yu/HtDocs/SHD/vol71/No2/JSCS_V71_No2-01.pdfpyridine carboxylic acidspyridine carboxylic acid N-oxidesdiazodiphenylmethanerate constantssolvent parametersprotic and aprotic solvents |
| spellingShingle | MILICA MISIC-VUKOVIC ALEKSANDAR D. MARINKOVIC BRATISLAV Z. JOVANOVIC SASA Z. DRMANIC Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides Journal of the Serbian Chemical Society pyridine carboxylic acids pyridine carboxylic acid N-oxides diazodiphenylmethane rate constants solvent parameters protic and aprotic solvents |
| title | Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides |
| title_full | Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides |
| title_fullStr | Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides |
| title_full_unstemmed | Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides |
| title_short | Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides |
| title_sort | investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents part ii pyridine mono carboxylic acid n oxides |
| topic | pyridine carboxylic acids pyridine carboxylic acid N-oxides diazodiphenylmethane rate constants solvent parameters protic and aprotic solvents |
| url | http://www.shd.org.yu/HtDocs/SHD/vol71/No2/JSCS_V71_No2-01.pdf |
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