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Diphosphite ligands based on ribose backbone as suitable ligands in the hydrogenation and hydroformylation of prochiral olefins
Institution:1. College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China;2. College of Science, Nanjing Forestry University, Nanjing 210037, People’s Republic of China;3. Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore;1. Hyogo University of Teacher Education, 942-1 Shimokume, Kato, Hyogo 673-1494, Japan;2. Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan;3. Department of Environmentals Engineering, Niihama National College of Technology, 7-1 Yagumo-cho, Niihama, Ehime 792-8580, Japan;1. Discipline of Inorganic Materials and Catalysis, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), G.B. Marg, Bhavnagar 364 002, Gujarat, India;2. KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia;3. R&D Center, Vadodara Manufacturing Division, Reliance Industries Limited, Vadodara, Gujarat, India
Abstract:Rh(I) and Ir(I) cationic complexes M(cod)(PP)]BF4 have been synthesised from diphosphite ligands 46 derived from ribofuranose. They have been used in the rhodium and iridium catalysed asymmetric hydrogenation of acrylic acid derivatives. Ribose derivative ligands 46 have also been used as auxiliaries in the Rh-catalysed hydroformylation of styrene. Hydroformylation results have been explained on the basis of the species formed under hydroformylation conditions. Comparative experiments with the related epimer d-(+)-xylose derivatives showed that the configuration of the product is controlled by the absolute configuration of the stereogenic carbon atom C-3.
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