Mannich Reaction as a Key Strategy for the Synthesis of Benzoazacrown Ethers and Benzocryptands
作者:Victor N. Pastushok、Jerald S. Bradshaw、Andrei V. Bordunov、Reed M. Izatt
DOI:10.1021/jo9607931
日期:1996.1.1
A convenient method for the synthesis of mono- and polycyclic azacrown macrocycles containing aromatic fragments using the Mannich condensation of phenols and secondary diamines has been studied. This new approach allowed the synthesis of bisphenols connected by oligoazaoxaalkane units in good yields without the need to protect the phenolic OH groups. These bisphenols (13-16) were alkylated with ditosylates