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11
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79955465095
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note
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The rearrangement consists of an O→N(a) acyl migration. In many publications on the Ugi reaction such a rearrangement is erroneously referred as Mumm rearrangement. The true Mumm rearrangement consists of the transformation of an O-acyl isoamide into an imide. Professor Helmut Quast, University of Würzburg, Germany, private communication.
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14
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33748088534
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A.G. Neo, R.M. Carrillo, S. Barriga, E. Momán, S. Marcaccini, and C.F. Marcos Synlett 2007 327 329
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34
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79955482741
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Previous experiments performed in our laboratory showed that attempts to isolate the Ugi-4CC primary adducts by column chromatography were unsatisfactory because the rearrangement of the Ugi primary adducts to secondary adducts took place to a large extent
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Previous experiments performed in our laboratory showed that attempts to isolate the Ugi-4CC primary adducts by column chromatography were unsatisfactory because the rearrangement of the Ugi primary adducts to secondary adducts took place to a large extent.
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35
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79955484691
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The molecular ion was not detected in the mass spectra of compounds 6c,f
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The molecular ion was not detected in the mass spectra of compounds 6c,f.
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36
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79955478540
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note
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2O.
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