Journal of the American Chemical Society

Novel η3-Allylpalladium-Pyridinylpyrazole Complex: Synthesis, Reactivity, and Catalytic Activity for Cyclopropanation of Ketene Silyl Acetal with Allylic Acetates

A Satake, T Nakata

Index: Satake, Akiharu; Nakata, Tadashi Journal of the American Chemical Society, 1998 , vol. 120, # 40 p. 10391 - 10396

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Citation Number: 81

Abstract

Novel cationic η3-allylpalladium-pyridinylpyrazole complexes 1a and 1b were synthesized from 3-alkyl-5-(2-pyridinyl) pyrazole and η3-allylpalladium chloride dimer in the presence of AgBF4. Cationic complexes 1a and 1b were converted into neutral complexes 2a and 2b under basic conditions. These complexes were characterized by 1H, 13C, and 15N NMR studies. Neutral complexes 2a and 2b have high catalytic activity for cyclopropanation of ...