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Digitale Medien

Selective esterolysis of nitrophenyl acetates in crystalline α-cyclodextrin complexes (1988)

Wernick, David L. ; Savion, Zeev ; Levy, Joseph

Springer

Journal of inclusion phenomena and macrocyclic chemistry 6 (1988), S. 483-490

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Details

ISSN: 1573-1111

Schlagwort(e): Solid-state esterolysis ; α-cyclodextrin ; mitrophenyl acetates

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract The esterolysis ofm-nitrophenyl acetate (mNPA) andp-nitrophenyl acetate (pNPA), complexed with α-cyclodextrin, was investigated in the solid state. At 117 and 140°C, the initial half-times ofmNPA esterolysis were 30 and 24 h, respectively, whereasp NPA esterolysis was undetectably slow. At 117°C, themNPA reaction proceeded to completion, and cyclodextrin acetate andm-nitrophenol products were identified. At 140°C,the initial rate was followed by a slow phase with a half-time of 130 h, evidently due to a structural change in the complex. Themeta/para selectivity of the solid-state reaction is considerably enhanced over the selectivity reported in aqueous solution.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00660746

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