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Hardegger E, Schüep W. Synthese der 2-Thio-D-glucose und einiger 3-Thio-D-altrose-Derivate. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19700530510] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Randazzo G, Capasso R, Rosaria Cicala M, Evidente A. A simple method for detritylation of carbohydrate derivatives. Carbohydr Res 1980. [DOI: 10.1016/s0008-6215(00)84678-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Thiem J, Jürgens HJ, Paulsen H. Darstellung und Reaktionen von 2-Thio-hexopyranosiden. ACTA ACUST UNITED AC 1977. [DOI: 10.1002/cber.19771100819] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Angibeaud P, Defaye J, Franconie H, Blanc-Muesser M. Accès à des sulfures d'alkyle et de furannyle à partir de dithio-acétals de pentoses. Carbohydr Res 1976. [DOI: 10.1016/s0008-6215(00)83139-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hanessian S, Staub A. Synthesis of carbohydrate derivatives containing vinylic thioether groups1. Carbohydr Res 1971. [DOI: 10.1016/s0008-6215(00)81177-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
The reaction of alkylsulfenyl chlorides with 3,4-dihydro-2H-pyran, followed by treatment of the product with sodium methoxide, gave, highly stereoselectively, trans-3-alkylthio-2-methoxytetrahydropyrans. Purification by distillation under a vacuum at temperatures above 55° resulted in the elimination of methyl alcohol to produce 5-(alkylthio)-3,4-dihydro-2H-pyrans in a good yield. At lower temperatures, the more volatile homologues could be distilled undecomposed, but these had undergone thermal isomerization to a mixture of cis- and trans-3-alkylthio-2-methoxytetrahydropyrans. The conformational preference of these isomers is discussed.
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