KHSO4: a highly efficient and reusable heterogeneous catalyst for hydroarylation of styrenes |
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Authors: | Rajendra D Patil Girdhar Joshi and Subbarayappa Adimurthy |
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Institution: | (1) Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute (CSIR), G. B. Marg, Bhavnagar, 364002, India; |
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Abstract: | Abstract Hydroarylation of styrenes with arenes/heteroarenes using KHSO4 (10 mol%) as an efficient heterogeneous catalyst is described. High conversion and selectivity (>99%) were observed for hydroarylation
of styrenes with 2-naphthol at reflux temperature of 1,2-dichloroethane. Yields were quantitative with all styrenes. Moderate
to good conversions and selectivities were achieved with other aromatics and heteroaromatics under the same conditions. Regeneration
and reusability of KHSO4 were demonstrated. Addition of a trace amount of water could help to reactivate the KHSO4 through dispersion and to facilitate the hydroarylation reaction. |
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