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Oxidative carbonylation of phenol to diphenyl carbonate catalyzed by Pd complex with diimine ligands |
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| Authors: | Hirotoshi Ishii Meenakshi Goyal Mitsuru Ueda Kazuhiko Takeuchi Michihiko Asai |
| Affiliation: | (1) Joint Research Center for Precision Polymerization (JRCPP) – Tsukuba, Japan Chemical Innovation Institute (JCII), NIMC, 1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan;(2) Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ohokayama, Meguro-ku, Tokyo, 152-8552, Japan;(3) National Institute of Materials and Chemical Research (NIMC), 1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan |
| Abstract: | Pd complexes with diimine ligands were investigated as novel Pd catalysts for direct synthesis of diphenyl carbonate by oxidative carbonylation of phenol using carbon monoxide and air. Best efficiency was obtained by using a PdCl2(ArN=CH–)2 or PdCl2(ArN=CMe–)2/Mn(TMHD)3/(Ph3P=)2NBr system where TOF reached 8.08 and 8.00 mol-DPC/mol-Pd h, respectively. The efficiency was increased with increases in the CO pressure. |
| Keywords: | oxidative carbonylation phenol carbon monoxide palladium diimine |
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