On triazoles. XL [1]. Non catalytic dehalogenation of some 5-chloro-1,2,4-triazolo[1,5-<i>a</i>]pyrimidine derivatives
作者:Gábor Berecz、József Reiter、János Császár
DOI:10.1002/jhet.5570360515
日期:1999.9
A non catalytic dehalogenation method of type 4 5-chloro-1,2,4-triazolo[1,5-a]pyrimidine derivatives based on the hydrolysis of the corresponding type 5 p-toluenesulphonyl hydrazones with diluted aqueous sodium carbonate solution was elaborated. The method provides the required 5-unsubstituted derivatives 6 also in those cases when the simple hydrogenation is not possible. Using deuterium oxide as