Ultrasonic irradiation of the Ullmann condensation: Application to the preparation of dioxolo, dioxino, cyclopent, and imidazolo anthranilic acid derivatives
The synthesis of N-aryl anthranilic acid derivatives bearing dioxolo, dioxino, cyclopent, and imidazolo supplementary ring systems is reported. The Ullmann-Goldberg condensation of the N-aryl anthranilic acid is improved in yield and reaction time, compar
Pyridinium Betaines Derived from Thiazolo and Imidazoacridinones
Four betaines derived from imidazo[4,5-a], imidazo[5,4-a] and thiazolo[5,4-a]acridine have been prepared in a six step procedure starting from 2-chlorobenzimidazoles and benzothiazoles. The 1H and 133C nmr has been used to characteri
Galy, Jean-Pierre,Hanoun, Jean-Pierre,Pique, Valerie,Jagerovic, Nadine,Elguero, Jose
p. 1781 - 1787
(2007/10/03)
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