Pyridinium N-heteroarylaminides: synthesis of N-heteroarylpolyamines
摘要:
The synthesis of a set of new N-heteroarylpolyamines is reported. A multiple and regioselective alkylation on the exo nitrogen of pyridinium N-(heteroaryl)aminides with several polybromo compounds, followed by a clean N-N bond reduction of the corresponding pyridinium salts, provides an easy and general method to obtain the title compounds. (C) 2009 Elsevier Ltd. All rights reserved.