%0 Journal Article
%T CONDENSATION REACTIONS OF 3-PHENACYLIDENE-2-INDOLINONE WITH 1,3- DINUCLEOPHILES SUCH AS GUANIDIN HYDROCHLORIDE AND HYDRAZINE HYDRATE TO PREPARE SPIRO COMPOUNDS Kondensationsreaktionen von 3-PHENACYLIDENE-2-Indolinon mit 1,3 - Dinukleophilen WIE Guanidin-Hydrochlorid und HYDRAZINE HYDRATE Spiroverbindungen PREPARE
%A Golnaz kazemi
%A Mohammad seifi and Hassan sheibani
%J Heterocyclic Letters
%D 2013
%I Raman Publications
%X The condensation reaction of guanidine hydrochloride and hydrazine hydrate with 3- phenacylidene-2-indolinone, is extended to the formation of spiro[indole-3,4'-pyrimidin]-2(1H)- one and spiro[indol-3,3กไ-pyrazol]-2(1H)-one. These reactions occur in ethanol at reflux, in presence of sodium acetate. This method provides a new route to produce spiro pyrimidine and spiro pyrazoline in good yields.
%K Guanidine hydrochloride
%K hydrazine hydrate
%K 3-phenacylidene-2-indolinone
%K spiro pyrimidine and spiro pyrazoline.
%U http://heteroletters.org/issue32/3.html