Title of article :
Reverse Regioselection in the Synthesis of Spiropyrazolobarbiturates Using C-Br and C-H Nitrilimines
Author/Authors :
Foti، Francesco نويسنده , , Grassi، Giovanni نويسنده , , Risitano، Francesco نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
The 1,3-dipolar cycloaddition of arylmethylenebarbiturates 4 with C-Br 2 and C-H 3 nitrilimines gives spiropyrazolobarbiturates 5 and 6 with reverse regioselectivities.
Keywords :
dipolar cycloaddition , spirans , bromoderivatives , nitrile imines
