One-Pot Synthesis of Unsymmetrical Bis(4-Hydroxycoumarin-3-yl)methanes
Received: 25 April 2017
Accepted after revision: 02 June 2017
13 July 2017 (eFirst)
Unsymmetrical bis(4-hydroxycoumarin-3-yl)methane derivatives have been synthesized from 4-hydroxycoumarins, aldehydes, and secondary amines via 3-(aminoalkyl)-4-hydroxycoumarin intermediates, followed by substitution.