332097-92-4Relevant academic research and scientific papers
Synthesis and transformations of pyrido[4,3-d]-pyrimidines with N-heterocycles moieties
Shaifullah Chowdhury,Shibata, Yasuyuki
, p. 115 - 125 (2001)
ortho-Amino ester (1) was cyclized to fused pyrimidines by reacting with isocyanate, isothiocyanate, or dithioketal reagent. Thioxo compound (2a) was halogenated, methylated and subsequently displaced by amines. ortho-Amino ester (1) was also converted into directly tricyclic azolopyrido[4,3-d]pyrimidines (8-13).
