The preparation of 2-nitro-1-naphthoic acid, and the alkaline hydrolysis of ethyl 2-nitro-1-naphthoate and ethyl 8-nitro-1-naphthoate in ethanol-water

Possible methods of the preparation of 2-nitro-1-nephthoic acid, a derivative of naphthalene which has not previously been synthesised, have been reviewed and it has been prepared from 2-nitro-1-methylnaphthalene. A mechanism has been proposed for the condensation of aromatic nitromethyl compounds with diethyl oxalate. Ethyl 2-nitro-1-naphthoate and ethyl 8-nitro-1-naphthoate have been prepared and the kinetics of their alkaline hydrolysis in ethanol-water (85:15 by weight) have been studied over the temperature range 50-60°C. In following the kinetics of hydrolysis, a conductivity method has been used. Energies and entropies of motivation have been calculated for these hydrolysis reactions. Certain anomalies in activation energy and entropy values for the alkaline hydrolysis of nitro substituted ethyl 1-naphthoates, compared with those obtained for nitro substituted ethyl benzoates, have been discussed

Calcul des intensités IR et des fréquences vibrationnelles de l’eau, du furanne et de dérivés substitués, la méthode CNDO/2

Les intensités infrarouge et les fréquences vibrationnelles des molécules H2O, HDO, D2O et de certains modes du furanne et de dérivés substitués en position 2 ont été calculées par la méthode CNDO/2. Les résultats théoriques obtenus sont présentés puis discutés en fonction des données expérimentales