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For convenience, the corresponding NHCs prepared from the precursors 4a-h were denoted as NHCs 4a'-h'
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(f) For convenience, the corresponding NHCs prepared from the precursors 4a-h were denoted as NHCs 4a'-h'.
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The different stereochemical outcome of bulky ketenes is also observed in the [4 + 2] cycloaddition reaction of ketenes with Nbenzoyldiazenes (ref 16e)
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(j) The different stereochemical outcome of bulky ketenes is also observed in the [4 + 2] cycloaddition reaction of ketenes with Nbenzoyldiazenes (ref 16e).
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59
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70349112082
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4 led to a complex instead of the corresponding diol. See Supporting Information for details.
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4 led to a complex instead of the corresponding diol. See Supporting Information for details.
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