An efficient Pd(II)-based catalyst system for carboxylation of aromatic C-H bond by addition of a phosphenium salt |
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| Authors: | Ken Sakakibara |
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| Affiliation: | Department of Chemistry and Biochemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 Japan |
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| Abstract: | Addition of a phosphenium dramatically improved the reaction yields in the carboxylation of arenes by formic acid catalyzed by Pd(II). Control experiments revealed that the majority of the phosphenium triflate was converted to a mixed anhydride of phosphonic acid and formic acid (7), which however did not substitute for the phosphenium to improve the reaction yield. |
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| Keywords: | Electrophilic substitution Phosphenium salt Palladium Carboxylation Catalyst |
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