2026-04-17T16:05:34Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/693032025-11-19T19:20:20Zcom_2072_1057col_2072_478908col_2072_478917col_2072_478933

00925njm 22002777a 4500 dc Cristóbal Lecina, Edgar author Costantino, Andrea R. author Grabulosa, Arnald author Riera i Escalé, Antoni author Verdaguer i Espaulella, Xavier author 2016-02-08T07:43:31Z 2016-02-08T07:43:31Z 2015-09-30 2016-02-08T07:43:31Z The asymmetric Pauson−Khand reaction catalyzed by [Rh(COD)(MaxPHOS)]BF4 is described. Several 1,6-enynes have been chosen as model substrates affording moderate yields and selectivities of up to 86% ee. Besides binap-type ligands, we have demonstrated that the Pstereogenic C1-symmetry small-bite-angle ligand MaxPHOS is a viable ligand in this process. The formation of [2+2+2] cycloaddition compounds has shown to be a competitive process. A mechanism is proposed to account for the observed results. The intermediate rhodium dicarbonyl complex 6 was synthesized, and its solid-state structure was elucidated by X-ray crystallography. Lligands Catàlisi asimètrica Rodi Reacció de Pauson-Khand Ligands Enantioselective catalysis Rhodium Pauson-Khand reaction Rhodium-Catalyzed Pauson−Khand Reaction Using a Small-Bite-Angle P‑Stereogenic C1‑Diphosphine Ligand