Significantly improved method for the pd-catalyzed coupling of phenols with aryl halides: Understanding ligand effects
Abstract
By means of quantum chemistry (PBE0/def2-TZVPP; DLPNO-CCSD(T)/cc-pVTZ) and small, but reliable models of Polyhedral Oligomeric Silsesquioxanes (POSS), an array of astrochemically-relevant catalysis products, related to prebiotic and origin of life chemistry, has been theoretically explored. In this work, the heterogeneous phase hydrocyanation reaction of an unsaturated C = C bond (propene) catalyzed by a Ni center complexed to a silica surface is analyzed. Of the two possible regioisomers, the branched iso-propyl-cyanide is thermodynamically and kinetically preferred over the linear n-propyl-cyanide (T = 200 K). The formation of nitriles based on a regioselective process has profound implications on prebiotic and origin of life chemistry, as well as deep connections to terrestrial surface chemistry and geochemistry.
Publication Title
Angewandte Chemie - International Edition
Recommended Citation
Burgos, C. H., Barder, T. E., Huang, X., & Buchwald, S. L. (2006). Significantly improved method for the pd-catalyzed coupling of phenols with aryl halides: Understanding ligand effects. Angewandte Chemie - International Edition, 45 (26), 4321-4326. https://doi.org/10.1002/anie.200601253
