The first synthesis of pyridinium N-benzoylguanidines by bismuth- and mercury-promoted guanylation of N-iminopyridinium ylide with thioureas
作者:Silvio Cunha、Manoel T. Rodrigues、Cleuza C. da Silva、Hamilton B. Napolitano、Ivo Vencato、Carlito Lariucci
DOI:10.1016/j.tet.2005.08.052
日期:2005.10
This work describes the first successful synthesis of five pyridinium N-benzoylguanidines. These new pyridinium ylides were prepared in moderate to good yields through the guanylation reaction of N-iminopyridinium ylide with N-benzoylthioureas, using both bismuth nitrate and mercury chloride as inorganic thiophiles. X-ray analysis of one pyridinium N-benzoylguanidine was investigated and the E configuration