A new method to extend dimercaptan or diamine chains with aminopropyl units using 3-bromo-N-tritylpropanamine
摘要:
Dimercaptans and diamines react with 3-bromo-N-tritylpropanamine to give the corresponding N,N'-ditrityldithia and N,N'-ditritylpolyaza compounds in yields of 50-80%. The trityl protecting groups are readily removed in acid. These reactions make possible the synthesis of a number of new alpha-omega-diamino compounds needed for the synthesis of new dithiadiaza, di- and polyaza macrocyclic ligands.