Extending the Substrate Scope in the Hydrogenation of Unfunctionalized Tetrasubstituted Olefins with Ir-P Stereogenic Aminophosphine–Oxazoline Catalysts
作者:Maria Biosca、Ernest Salomó、Pol de la Cruz-Sánchez、Antoni Riera、Xavier Verdaguer、Oscar Pàmies、Montserrat Diéguez
DOI:10.1021/acs.orglett.8b04084
日期:2019.2.1
MaxPHOX-type ligands have been successfully applied in the challenging asymmetrichydrogenation of tetrasubstitutedolefins under mild reaction conditions. Gratifyingly, these catalyst precursors are able to efficiently hydrogenate not only a range of indene derivatives (ee’s up to 96%) but also 1,2-dihydronapthalene derivatives and acyclic olefins (ee’s up to 99%), which both constitute the most challenging
<i>C</i><sub>1</sub>-Symmetric Si-bridged (2-indenyl)(1-indenyl) <i>ansa</i>-metallocenes as efficient ethene/1-hexene copolymerization catalysts
作者:Dmitry V. Uborsky、Dmitry Y. Mladentsev、Bogdan A. Guzeev、Ilya S. Borisov、Antonio Vittoria、Christian Ehm、Roberta Cipullo、Coen Hendriksen、Nic Friederichs、Vincenzo Busico、Alexander Z. Voskoboynikov
DOI:10.1039/c9dt04896k
日期:——
Synthesis, ethene/1-hexene copolymerization screening, and QSAR study of 28 silicon bridged (2-indenyl)(1-indenyl) zirconocenes: new promising catalysts for LLDPE were identified.