A mechanistic change in the alkaline hydrolysis of esters of fluorene-9-carboxylic acid
作者:Manoochehr Alborz、Kenneth T. Douglas
DOI:10.1039/c39800000728
日期:——
The Brønsted leaving group (β1g) plot for the alkalinehydrolysis of fluorene-9-carboxylate esters in the pH region corresponding to the existence of the ester anion shows a minimum flanked by a region of high negative β1g(-1·01), corresponding to an E1cb pathway and, for esters of pK1g > 9·5, a region of positive β1g(+0·11).
Electrostatic micellar effects on the rate of spontaneous decomposition of m-nitrophenyl 9-fluorenecarboxylate
作者:Valdir R. Correia、Iolanda Midea Cuccovia、Magaly Stelmo、Hernan Chaimovich
DOI:10.1021/ja00032a031
日期:1992.3
The effects of neutral, ionic, and zwitterionic micelles on the rate of the spontaneous decomposition of m-nitrophenyl 9-fluorenecarboxylate (I) were determined. Neutral micelles of a poly(oxyethylene) detergentproduce a small increase in the decomposition rate. Negatively charged micelles of sodiumdodecylsulfate catalyze the reaction 2-fold while positively charged micelles of hexadecyltrimethylammonium
Flash Photolysis of 10-Diazo-9(10<i>H</i>)-phenanthrenone in Aqueous Solution. Hydration of Fluorenylideneketene and the Fluorene-9-carboxylic Acid Keto−Enol System
作者:J. Andraos、Y. Chiang、A. J. Kresge、V. V. Popik
DOI:10.1021/ja971381s
日期:1997.9.1
Flashphotolysis of 10-diazo-9(10H)-phenanthrenone in aqueoussolution was found to give two successively formed transient species and to produce fluorene-9-carboxylic acid as the major reaction product. These transients were identified, through solvent isotope effects and the form of acid−base catalysis, as fluorenylideneketene, formed by photo-Wolff reaction of the diazophenanthrenone, and fluorene-9-carboxylic