Preparation, reactivities, and NMR spectra of pentafluorophenyltin derivatives
J Chen, K Sakamoto, A Orita, J Otera
Index: Chen, Jian-Xie; Sakamoto, Katsumasa; Orita, Akihiro; Otera, Junzo Journal of Organometallic Chemistry, 1999 , vol. 574, # 1 p. 58 - 65
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Abstract
A variety of pentafluorophenyltin compounds were prepared and their chemical properties were examined. These compounds effectively catalyzed Mukaiyama-aldol reaction of ketene silyl acetal in sharp contrast to the inertness of normal alkyltin halides like Bu2SnCl2. The increased Lewis acidity of the pentafluorophenyltin halides was proved by 119Sn-and 13C- NMR spectra. On the other hand, the pentafluorophenyl group reduced the reactivities of ...
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