Gallou, Fabrice and Plummer, Scott (2019) Insights on Heterogeneous Bimetallic Micellar Nanocatalysis for Buchwald-Hartwig Aminations. ACS Catal, 9 (11). pp. 10389-10397.

Abstract

Nanocatalyst for micellar Buchwald-Hartwig aminations is developed, thoroughly characterized, and applied on a variety of substrates. Catalyst is stable under ambient conditions for up to six months. Association of Pd with Cu and together with ligand and carbon surface is revealed by XAS analysis. Catalyst retained its activity after several recycles, and its structure remained intact as confirmed by 31P NMR spectroscopy. In addition to XAS analysis, a complete characterization of catalyst is performed by SEM, HRTEM, XPS, TGA, IR, and NMR analysis. Control NMR experiments revealed the binding of the ligand with both the Cu and Pd and all phosphine molecules are under the same environment. Proline-based amphiphile PS-750-M is critical for catalytic activity, and catalytic reactions require mild conditions in water as gross reaction medium. Reactions are highly reproducible at variable scales. Low E factor and robust recycling of catalysts, environmentally benign amphiphile, and water confirmed the green-ness of technology.

Item Type:	Article
Date Deposited:	28 Apr 2020 00:45
Last Modified:	28 Apr 2020 00:45
URI:	https://oak.novartis.com/id/eprint/40197