Реакция #1065976

Уравнение реакции

phenyl acetate

2-hydroxyacetophenone

4-hydroxyacetophenone

→

m-cresyl acetate

p-cresyl acetate

guaiacol acetate

Растворители

hydrogen fluoride

hydrogen fluoride

Условия реакции

Обработка

1. 1
   Другоеwith a maximum yield of 81% after 24 hours of reaction time
2. 2
   Другоеto be obtained by K
3. 3
   Другоеin yields may

Методика

Dann and Mylius in a dissertation included as part of a series of Reports from the Institute for Applied Chemistry of the University of Erlangen, received for publication on January 7, 1954 and published in Annalen der Chemie, 587, 1 to 15, show the rearrangement of phenyl acetate in hydrogen fluoride to 4-hydroxyacetophenone, with a maximum yield of 81% after 24 hours of reaction time, and report a yield of 92% stated to be obtained by K. Weichert as reported in Angewandte Chemie, 56, 338 (1943). However, Dann and Mylius suggest that the difference in yields may be at least partly due to the previous ignoring by Weichert of the accompanying 2-hydroxyacetophenone. Dann and Mylius also report somewhat lower yields of hydroxy aromatic ketones from rearrangements in hydrogen fluoride of m-cresyl acetate, p-cresyl acetate, and guaiacol acetate.

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