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Synthesis and Application of Tetraphosphane Ligands in Rhodium‐Catalyzed Hydroformylation of Terminal Olefins: High Regioselectivity at High Temperature |
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| Authors: | Shichao Yu Dr. Xiaowei Zhang Yongjun Yan Dr. Chaoxian Cai Liyan Dai Prof. Xumu Zhang Prof. |
| Affiliation: | 1. Department of Chemistry and Chemical Biology & Pharmaceutical Chemistry, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854 (USA), Fax: (+1)?732‐445‐6312;2. College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, Zhejiang (P.R. China), Fax: (+86)?571‐8795‐2693 |
| Abstract: | A new class of substituted tetraphosphane ligands has been developed and applied in the rhodium‐catalyzed regioselective hydroformylation of terminal olefins. The high regioselectivity (linear selectivity is above 97 % for 1‐octene and 1‐hexene) at high temperature (140 °C) shown by these tetraphosphane ligands is remarkable considering the low regioselectivity commonly observed under similar reaction conditions when other bisphosphane analogues are used. The steric and electronic effects of substituents on the diarylphosphane moiety have also been examined. |
| Keywords: | biaryls hydroformylation phosphane ligands regioselectivity rhodium |