A low-nuclear Ag₄ nanocluster as a customized catalyst for the cyclization of propargylamine with CO₂.

ABSTRACT: The preparation of 2-Oxazolidinones using CO₂ offers opportunities for green chemistry, but multi-site activation is difficult for most catalysts. Here, A low-nuclear Ag₄ catalytic system is successfully customized, which solves the simultaneous activation of acetylene (-C≡C) and amino (-NH-) and realizes the cyclization of propargylamine with CO₂ under mild conditions. As expected, the Turnover Number (TON) and Turnover Frequency (TOF) values of the Ag₄ nanocluster (NC) are higher than most of reported catalysts. The Ag₄* NC intermediates are isolated and confirmed their structures by Electrospray ionization (ESI) and ¹H Nuclear Magnetic Resonance (¹H NMR). Additionally, the key role of multiple Ag atoms revealed

SUBMITTER: Li L 

PROVIDER: S-EPMC10620197 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature