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Volumn 54, Issue 10, 2015, Pages 3061-3064

Acceleration of acetal hydrolysis by remote alkoxy groups: Evidence for electrostatic effects on the formation of oxocarbenium ions

Author keywords

Carbocations; Carbohydrates; Electrostatic effects; Hydrolysis; Kinetics

Indexed keywords

CARBOHYDRATES; ELECTROSTATICS; ENZYME KINETICS;

EID: 84923368406     PISSN: 14337851     EISSN: 15213773     Source Type: Journal    
DOI: 10.1002/anie.201410043     Document Type: Article
Times cited : (21)

References (37)
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    • (2011) Angew. Chem. , vol.123 , pp. 12076-12129
  • 9
    • 85028168955 scopus 로고    scopus 로고
    • note
    • The small difference in relative rates of reactions of the α-and β-anomers observed in Reference [7] is consistent with earlier observations (Ref. [1]).
  • 10
    • 85028170320 scopus 로고    scopus 로고
    • note
    • Activation of thioglycosides is faster for sugars bearing axial groups at C4 (Ref. [3]).
  • 17
    • 85028171355 scopus 로고    scopus 로고
    • note
    • 2 ≥ 0.96. Details are provided in the Supporting Information.
  • 25
    • 85028165406 scopus 로고    scopus 로고
    • note
    • The acetal cis-7 could adopt a sterically disfavored diaxial conformer positioning the alkoxy group closer to the acetal carbon atom, but the slower rate of acceleration compared to that of trans-7 suggests that that it does not.
  • 30
    • 85028135448 scopus 로고    scopus 로고
    • note
    • The involvement of an acyloxy group at the 2-position of a carbohydrate, which also does not cause considerable ring strain, has been suggested to accelerate hydrolysis by only up to 13-fold when controlled for inductive effects. This acceleration has been attributed to stabilization of the developing positive charge by the carbonyl oxygen atom, and not formation of an onium ion (Ref. [24]).
  • 33
    • 0001383467 scopus 로고
    • Angew. Chem. 1986, 98, 312-322.
    • (1986) Angew. Chem. , vol.98 , pp. 312-322


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.