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Volumn 75, Issue 20, 2010, Pages 6747-6755

SnCl4- and TiCl4-catalyzed anomerization of acylated O - And S -glycosides: Analysis of factors that lead to higher α: β d reaction rates

Author keywords

[No Author keywords available]

Indexed keywords

ANOMERIC EFFECT; ANOMERICS; ANOMERIZATION; CARBONYL GROUPS; CLEAVAGE MECHANISM; ELECTRON-WITHDRAWING ABILITY; EQUILIBRIUM RATIOS; FIRST ORDER; FORWARD REACTIONS; GALACTOPYRANOSIDE; GALACTURONIC ACIDS; GLUCURONIC ACIDS; GLUCURONIDES; GLYCOLIPIDS; GLYCOSIDATIONS; GLYCURONIC ACIDS; HETEROATOMS; LEWIS ACID; O-GLYCOSIDES; PROTECTING GROUP; RATE ENHANCEMENT; REVERSE REACTIONS; S-GLYCOSIDES; STEREOELECTRONIC EFFECT;

EID: 77957923630     PISSN: 00223263     EISSN: 15206904     Source Type: Journal    
DOI: 10.1021/jo101090f     Document Type: Article
Times cited : (84)

References (77)
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    • Synthesis of 1 - 18 followed published procedures or was closely related to established routes. Full details are provided in the Supporting Information. See ref 8 for the preparation of 15 - 18. For preparation of 1 - 14 see
    • Synthesis of 1 - 18 followed published procedures or was closely related to established routes. Full details are provided in the Supporting Information. See ref 8 for the preparation of 15 - 18. For preparation of 1 - 14 see: Graf von Roedern, E.; Lohof, E.; Hessler, G.; Hoffmann, M.; Kessler, H. J. Am. Chem. Soc. 1996, 118, 10156-10167
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    • 2 and have been found to proceed more quickly in this solvent.
    • 2 and have been found to proceed more quickly in this solvent.
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    • 4 always seem to give an emulsion upon addition of aqueous solution and dealing with this can lead to some loss of product
    • 4 always seem to give an emulsion upon addition of aqueous solution and dealing with this can lead to some loss of product.
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    • The faster rates of attaining equilibrium for benzoates compared with acetates was noted previously
    • The faster rates of attaining equilibrium for benzoates compared with acetates was noted previously: Reeves, R. E.; Mazzeno, L. W. J. Am. Chem. Soc. 1954, 76, 2219-2221
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    • Increased rates for anomerization of benzyl ethers were observed previously
    • Increased rates for anomerization of benzyl ethers were observed previously: Koto, S.; Morishima, N.; Kawahara, R.; Isikawa, K.; Zen, S. Bull. Chem. Soc. Jpn. 1982, 55, 1092-1096
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    • Chelation has also been proposed by others to explain anomerization. See ref 11 and the following
    • Chelation has also been proposed by others to explain anomerization. See ref 11 and the following: Wang, Y.; Cheon, H.-S.; Kishi, Y. Chem. Asian J. 2008, 3, 319-326
    • (2008) Chem. Asian J. , vol.3 , pp. 319-326
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    • Full details for the preparation of 1 - 14 is given in the Supporting Information.
    • Full details for the preparation of 1 - 14 is given in the Supporting Information.
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    • The preparation and analytical data for 15 - 18 and their α-anomers has been published previously. See ref 8.
    • The preparation and analytical data for 15 - 18 and their α-anomers has been published previously. See ref 8.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.