A transmetalation of the oxanickelacycle 7, generated from the 1,3-diene and tethered aldehyde in 6 via oxidative cycloaddition to a zerovalent nickel complex, with various organometallic reagents was investigated. It was found that the tandem reaction, i.e., cyclization of 6 followed by transmetalation of the resulting oxanickelacycle 7, proceeded smoothly using a catalytic amount of zerovalent nickel complex.
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Sato et al. (1999) studied this question.
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