Yang, Youjun Escobedo, Jorge O. Wong, Alexander Schowalter, Corin M. Touchy, Michael C. Jiao, Lijuan Crowe, William E. Fronczek, Frank R. Strongin, Robert M. A Convenient Preparation of Xanthene Dyes A facile synthetic route utilizing readily available reagents affords a series of regioisomerically pure xanthene dye derivatives. Advantages include relatively mild conditions and good to excellent yields. Nonpolar, highly crystalline intermediates are isolable by standard chromatographic techniques. The intermediates are in the requisite xanthene oxidation state, thus avoiding the need for relatively inefficient oxidation chemistry and/or harsh conditions. During the course of this work, a new boron-mediated 1,2-aryl migration reaction was discovered. Convenient Preparation;migration;xanthene oxidation state;technique;intermediate;Advantages;isolable;series;Nonpolar;regioisomerically;xanthene dye derivatives;reagent;Xanthene Dyes;yield;oxidation chemistry;aryl 2005-08-19
    https://acs.figshare.com/articles/dataset/A_Convenient_Preparation_of_Xanthene_Dyes/3272203
10.1021/jo051002a.s005