Catalyst-free and Eco-Friendly Synthesis of Masked Haloarylboronic Acids R (alkyl or Aryl)-B(dan) on Water

An environment-friendly methodology for the synthesis of R (alkyl or aryl)-B(dan) on water is described. 1,8-diamino naphthalene(danH2) was reacted with different types of organoboronic acids to furnish the products in moderate to excellent yields. A multi-gram scale reaction is also performed to ensure the scalability of the reaction.