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Synlett 2010(15): 2263-2266
DOI: 10.1055/s-0030-1258039
DOI: 10.1055/s-0030-1258039
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Unexpected Reduction of N-Hydroxyphthalimides to Phthalimides - Orthogonal Reduction of Functionalized N-Hydroxyphthalimides
Further Information
Received
17 June 2010
Publication Date:
12 August 2010 (online)
Publication History
Publication Date:
12 August 2010 (online)
Abstract
A chemoselective reduction of N-hydroxyphthalimides to phthalimides under mild conditions has been discovered. It involves reaction of an N-hydroxyimide with bis(pinacolato)diboron in the presence of a base. Other easily reducible functional groups, such as iodo, nitro, or azido groups are unaffected. Alternatively, such functional groups may be selectively reduced without affecting the N-hydroxyimide moiety using a set of classical conditions.
Key words
chemoselective reduction - bis(pinacolato)diboron - N-hydroxyphthalimides - phthalimides - mild conditions
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