Journal of the American Chemical Society
Communication
(21) This mixture of ketones 15 and 16 and of N-oxides 17 and 18
was generally carried forward without separation. However, for
characterization purposes, we have separated 15 and 16 and
independently oxidized them to 17 and 18, respectively. See the
Supporting Information for details.
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We thank Profs. Larry Overman and Sergey Pronin for helpful
discussions.
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