Synthesis and Reactivity of Six??Membered Oxa??Nickelacycles: A Ring??Opening Reaction of Cyclopropyl Ketones
T Tamaki, M Nagata, M Ohashi…
Index: Tamaki, Takashi; Nagata, Midue; Ohashi, Masato; Ogoshi, Sensuke Chemistry - A European Journal, 2009 , vol. 15, # 39 p. 10083 - 10091
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Citation Number: 37
Abstract
Abstract Cyclopropanecarboxaldehyde (1 a), cyclopropyl methyl ketone (1 b), and cyclopropyl phenyl ketone (1 c) were reacted with [Ni (cod) 2](cod= 1, 5-cyclooctadiene) and PBu 3 at 100 C to give η 2-enonenickel complexes (2 a–c). In the presence of PCy 3 (Cy= cyclohexyl), 1 a and 1 b reacted with [Ni (cod) 2] to give the corresponding μ-η 2: η 1- enonenickel complexes (3 a, 3 b). However, the reaction of 1 c under the same reaction ...
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