Unprecedented Migration of N-Alkoxycarbonyl Groups in Protected Pyroglutaminol

Cleavage of an O-silyl ether in an N-BOC-protected pyroglutaminol using TBAF led to an unprecedented migration of the BOC group. An investigation of the mechanism, based on experimental data and quantum mechanical calculations, is presented. Similar migration was observed for N-Cbz and N-methoxycarb...

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Veröffentlicht in:Organic letters 2001-02, Vol.3 (3), p.433-435
Hauptverfasser: Bunch, Lennart, Norrby, Per-Ola, Frydenvang, Karla, Krogsgaard-Larsen, Povl, Madsen, Ulf
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Sprache:eng
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Zusammenfassung:Cleavage of an O-silyl ether in an N-BOC-protected pyroglutaminol using TBAF led to an unprecedented migration of the BOC group. An investigation of the mechanism, based on experimental data and quantum mechanical calculations, is presented. Similar migration was observed for N-Cbz and N-methoxycarbonyl groups.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol0069397