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Title

Montmorillonite K-10 as a mild acid for the Nicholas reaction

AuthorsPinacho Crisótomo, Fernando R.; Carrillo Fumero, Romen ; Martín, Tomás ; Martín, Víctor S.
KeywordsNicholas reaction
Cyclic ether
Cobalt
Issue Date18-Apr-2005
PublisherElsevier
CitationTetrahedron Letters 46(16): 2829-2832 (2005)
AbstractThe use of Montmorillonite K-10 as a convenient acid component in the Nicholas reaction is described. Its use permits functional selectivity, inter- and intramolecular reactions and convenience in the experimental conditions. A four-step one-pot [Co2(CO)6–acetylene complex formation, THP-removal, cyclization and complex cleavage] process permits the direct synthesis of 2-ethynyl-tetrahydrofuran from 6-(tetrahydro-2H-pyran-2-yloxy)hex-1-yn-3-ol.
Publisher version (URL)https://doi.org/10.1016/j.tetlet.2005.02.118
URIhttp://hdl.handle.net/10261/211660
DOI10.1016/j.tetlet.2005.02.118
ISSN0040-4039
Appears in Collections:(IPNA) Artículos
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