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Synthesis 2004(16): 2711-2715
DOI: 10.1055/s-2004-831220
DOI: 10.1055/s-2004-831220
PAPER
© Georg Thieme Verlag Stuttgart · New York
Rapid and Efficient Protocol for the Synthesis of 4-Chlorotetrahydropyrans Using Niobium(V) Chloride
Weitere Informationen
Received
28 May 2004
Publikationsdatum:
16. September 2004 (online)
Publikationsverlauf
Publikationsdatum:
16. September 2004 (online)
Abstract
Aldehydes undergo a rapid coupling with 3-buten-1-ol utilizing 20 mol% of niobium(V) chloride to afford 4-chlorotetrahydropyran derivatives under extremely mild conditions within short reaction times in excellent yields with high selectivity. The similar halogenated tetrahydropyrans are also obtained using gallium(III) halides.
Keywords
Prins-cyclization - niobium(V) chloride - gallium(III) halides - halogenated tetrahydropyrans
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