| Autor: |
Kasfaik, T. V., Rassolova, G. V., Ponomareva, S. M., Medvedeva, E. N., Yushmanova, T. I., Lopyrev, V. A. |
| Zdroj: |
Russian Chemical Bulletin; October 1982, Vol. 31 Issue: 10 p1965-1968, 4p |
| Abstrakt: |
Conclusions 1.The NH acidity (pKa) of a series of carboxylic acid hydrazides and trifluoroacetamide in water was determined.2.A linear dependence which correlated the pKa values of RCONHNH2 hydrazides with thes* constants of the R substituents was found. The value of?*=1.79 found for the NH acidity of this series is almost the same as the analogous values for RCOOH aliphatic carboxylic acids of?*=1.81.3.When the inductive effects of the substituents in the amido group are similar, the acidity of the hydrazides is 2 pKa units greater than the acidity of primary amides. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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