作者:Richard Baltzly、Walter S. Ide、Arthur P. Phillips
DOI:10.1021/ja01614a049
日期:1955.5
Über neue und über verbesserte Wege zum Aufbau von pharmakologisch wichtigen Phenolen. III. Über die Synthese von Phenolketonen mittels freier Carbonsäuren
作者:Karl Kindler、Herbert Oelschläger、Paul Henrich
DOI:10.1002/ardp.19542870408
日期:——
Polyphosphoric Acid as a Reagent in Organic Chemistry. VII. Acylation<sup>1</sup>
作者:H. R. Snyder、C. T. Elston
DOI:10.1021/ja01607a038
日期:1955.1
Ueber die Genipkräuter der Alpen und der Schweiz und in Savoyen
作者:F. F. Virey
DOI:10.1002/ardp.18290280217
日期:——
Comparisons of O-acylation and Friedel–Crafts acylation of phenols and acyl chlorides and Fries rearrangement of phenyl esters in trifluoromethanesulfonic acid: effective synthesis of optically active homotyrosines
Reactions involving phenol derivatives and acyl chlorides have to be controlled for competitive O-acylations and C-acylations (Friedel–Crafts acylations and Fries rearrangements) in acidic condition. The extent for these reactions in trifluoromethanesulfonic acid (TfOH), which is used as catalyst and solvent, is examined. Although diluted TfOH was needed for effective O-acylation, concentrated TfOH