SYNTHESIS OF PYRIMIDINE DERIVATIVES BY REACTION OF PYRYLIUM SALTS WITH GUANIDINE AND COMPOUNDS OF THE GUANIDINE SERIES

Article abstract of DOI:10.1007/BF00553692

2,4,6-Triphenylpyrylium perchlorate reacts with methylguanidine to give 1-methyl-2-amino-4,6-diphenylpyrimidinium perchlorate, which undergoes the Dimroth rearrangement to give 2-methylamino-4,6-diphenylpyrimidine. 2,4,6-Triarylpyrylium perchlorates react