94079-00-2Relevant academic research and scientific papers
Synthesis of 4-Aminopyrimidines from 1,2,4-Oxadiazoles, I. A Novel General Method for the Preparation of 4-Aminoquinazolines and their Hetero Analogues
Korbonits, Dezsoe,Kiss, Pal,Simon, Kalman,Kolonits, Pal
, p. 3183 - 3193 (2007/10/02)
Catalytic hydrogenation of 3-(2-aminoaryl)-1,2,4-oxadiazoles (9, 12, 15, 18, 21) to 2-amino-N-acylarenecarboxamidines (10, 13, 16, 19, 22) followed by dehydration gave condensed 4-amino-pyrimidines (11, 14, 17, 20, 23), while the corresponding secondary amines (24) afforded 1,2-disubstituted 4-iminoquinazolines (26).Reduction and dehydration of 3--1,2,4-oxadiazoles (28) provided, via a somewhat different pathway, 4-(acylamino)quinazolines (31).
