Batch and Continuous Flow Hydrogenation of Liquid and Gaseous Alkenes Catalyzed by a Silica‐grafted Iridium(III) Hydride. Issue 12 (10th November 2016)

• Record Type: Journal Article
• Authors: Rimoldi, Martino; Mezzetti, Antonio
• Is Part Of: Helvetica chimica acta. Volume 99:Issue 12(2016:Dec.)
• Page Start: 908
• Page End: 915
• Publication Date: 2016-11-10
• Subjects: Gas flow -- Hydride -- Hydrogenation -- Iridium -- Pincer; Chemistry -- Periodicals; Chemistry, Analytical -- periodicals; Chimie -- Périodiques; 540
• DOI: 10.1002/hlca.201600184
• Languages: English
• ISSNs: 0018-019X

Abstract

Abstract : The silica‐grafted hydride complex [IrH(SBA‐15)(PCP)] (2a ; PCP = 1, 3‐bis((di‐ tert ‐butylphosphino)methyl)benzene) hydrogenates alkenes under ambient condition without prior activation. Compared to its POCOP analogue (POCOP = 1, 3‐bis((di‐ tert ‐butylphosphino)oxy)benzene), the activity of catalyst2a is significantly improved with liquid substrates and exceptionally boosted with ethene and propene. Under gas flow conditions, catalyst2a hydrogenates ethene with a remarkable turnover frequency of 0.95 s −1 . A stability test indicates that the conversion is constant for at least 1 week. Abstract :