Organometallics

Nickel (0)-Catalyzed Formation of Oxaaluminacyclopentenes via an Oxanickelacyclopentene Key Intermediate: Me2AlOTf-Assisted Oxidative Cyclization of an …

M Ohashi, H Saijo, T Arai, S Ogoshi

Index: Ohashi, Masato; Saijo, Hiroki; Arai, Tomoya; Ogoshi, Sensuke Organometallics, 2010 , vol. 29, # 23 p. 6534 - 6540

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Citation Number: 15

Abstract

The use of Me 2 AlOTf as an additive allowed the oxidative cyclization of pivalaldehyde and diphenylacetylene with nickel(0) in the presence of PCy 3 to give an oxanickelacyclopentene, the structure of which was unambiguously determined by means of X-ray diffraction study. In the presence of TMSCH═CH 2 , treatment of the oxanickelacyclopentene with an equimolar amount of AlMe 3 quantitatively gave an oxaaluminacyclopentene with simultaneous generation of ...

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