A series of 6- and 7-substituted derivatives of 2-(N,N-diethylamino)-4-(N,N-dimethylamino)quinazoline have been synthesized. The synthesis consists in converting N-phenyl-N',N'-diethylurea into chloroamidines which are treated with N,N-dimethylcyanamide to 1-chloro-2,4-diaza-1,3-butadiene derivatives, followed by a cyclization to quinazoline derivatives.
A series of 6- and 7-substituted derivatives of 2-(N,N-diethylamino)-4-(N,N-dimethylamino)quinazoline have been synthesized. The synthesis consists in converting N-phenyl-N',N'-diethylurea into chloroamidines which are treated with N,N-dimethylcyanamide to 1-chloro-2,4-diaza-1,3-butadiene derivatives, followed by a cyclization to quinazoline derivatives.
A study concerning the synthesis, basicity and hydrolysis of 4-amino-2-(<i>N</i>,<i>N</i>-diethylamino)quinazoline derivatives
作者:Wojciech Zieliński、Agnieszka Kudelko
DOI:10.1002/jhet.5570390627
日期:2002.11
Hydrolysis rates of 2-(N,N-diethylamino)-4-aminoquinazoline and 2-(N,N-diethylamino)-4-(N,N-dimethylamino)-quinazoline have been determined to observe the influence of substituents at the 4-amino group upon the hydrolysis. pKa values have been also determined for these compounds and analyzed in conjunction with the Hammettσ constants.
作者:Wojciech Zielinski、Agnieszka Kudelko、Elizabeth M. Holt
DOI:10.3987/com-97-8038
日期:——
A series of 6- and 7-substituted derivatives of 2-(N,N-diethylamino)-4-(N,N-dimethylamino)quinazoline have been synthesized. The synthesis consists in converting N-phenyl-N',N'-diethylurea into chloroamidines which are treated with N,N-dimethylcyanamide to 1-chloro-2,4-diaza-1,3-butadiene derivatives, followed by a cyclization to quinazoline derivatives.