Zirconocene Bis (perfluorooctanesulfonate) s-Catalyzed Highly Efficient Synthesis of 1, 3, 5-Triaryl Benzene via Cyclotrimerization of Ketones

…, XH Xu, HH Zhou, YF Kuang, SH Chen

Index: Zhang, Guo Ping; Qiu, Ren Hua; Xu, Xin Hua; Zhou, Hai Hui; Kuang, Ya Fei; Chen, Si Hai Synthetic Communications, 2012 , vol. 42, # 6 p. 858 - 864

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Citation Number: 10

Abstract

Air-stable zirconocene bis(perfluoroctanesulfonate)s [Cp 2 Zr]OSO 2 C 8 F 17 ) 2 ] (1) with high Lewis acidity and high thermal stability was prepared by the reaction between Cp 2 ZrCl 2 and AgOSO 2 C 8 F 17 . The as-prepared complex 1 exhibits good activity and selectivity in the cyclotrimerization of various ketones to the desired 1,3,5-triaylbenzenes. Furthermore, in the cyclic experiments, the complex 1 shows little loss of activity after 10 cycles. The results afford a ...