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.
The cross-coupling of aryl chlorides and bis(pinacolato)diboron was achieved using NiCl2(PMe3)(2) catalyst In the presence of metal 2,2,2-trifluoroethoxide. The catalyst smoothly provided the desired products regardless of a variety of functional groups and substituted positions.