83655-33-8Relevant academic research and scientific papers
Dimroth-Type Ring Transformation of 1,4,6-Trisubstituted-2(1H)-Pyrimidinethiones with Ammonia and Primary Alkyl Amines
Kashima, Choji,Katoh, Akira,Yokota, Yuko,Omote, Yoshimori
, p. 1942 - 1946 (2007/10/02)
1,4,6-Trisubstituted-2(1H)-pyrimidinethiones (Ia-k) underwent Dimroth-type ring transformation with ammonia and prymary alkyl amines in the presence of silver perchlorate to afford 2-(N-substituted)aminopyrimidines (IIa, c, d, f, j, k) and pyrimidinium perchlorates (IIIa-c, e-j), respectively.Furthermore, pyrimidinium perchlorates (III) were converted into 2(1H)-pyrimidinones (IV) in high yields by hydrolysis with concentrated hydrochloric acid.Keywords --- Dimroth-type ring transformation reaction; ammonia; primary alkyl amines; 2-(N-substituted)aminopyrimidines; silver perchlorate; 2-(N-substituted)aminopyrimidinium perchlorates; hydrolysis; concentrated hydrochloric acid
