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See the Supporting Information for full experimental details.
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outside of a glovebox for several months without any observable de-
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Enol ether 17 was formed in 73 % NMR yield in the absence of [Mn]
precatalyst 3.
We sincerely thank the reviewers for suggesting that we investigate the
stability of the catalyst.
Received: December 17, 2019
Eur. J. Org. Chem. 0000, 0–0
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