References
- Goldberg , A.A. 1952 . Hydrolysis of substituted o-chlorobenzoic acids. The mechanism of the reaction between o-halogenbenzoic acids and nucleophilic reagents . J. Chem. Soc. , : 4368 – 73 .
- Lindley , J. , Mason , T.J. and Lorimer , J.P. 1987 . Sonochemically enhanced Ullmann reactions . Ultrasonics , 25 ( 1 ) : 45 – 8 .
- Bacon , R. and Stewart , J. 1965 . Metal ions and complex in organic reactions IV. Copper-promoted prepns. of diarylethers and copper competing H-transfer processes . J. Chem. Soc. , : 4953 – 61 .
- Pellón , R.F. , Carrasco , R. , Milán , V. and Rodés , L. 1995 . Use of pyridine as cocatalyst for the synthesis of 2-carboxy substituted diphenylethers by Ullmann-Goldberg condensation . Synth. Commun. , 25 ( 7 ) : 1077 – 1083 .
- Pellón , R.F. , Docampo , M. and Jáuregui , U. 1999 . Study of the synthesis and optimization of 2-carboxidiphenylethers acids using water as solvent . Revista CNIC Ciencias Químicas , 30 ( 2 ) : 55 – 59 .
- Ullmann , F. and Zlokasoff , M. 1905 . Aryl salicylic acids and their conversion into xantone . Ber. , 38 ( 2 ) : 2111 – 2119 .
- Díaz , M. , Vélez , H. , Rodríguez , M. , Carrasco , R. and Berty , H.J. 1990 . Sustituents effects in 13C NMR of substituted diphenylethers . Revista CNIC Ciencias Químicas , 21 ( 2–3 ) : 146 – 149 .
- Guerra , R.M. , Rosado , A. , Carrasco , R. , Valdés , A. and Berty , H. 1991 . Mass espoectrometry of substituted carboxydiphenylethers . Revista CNIC Ciencias Químicas , 22 ( 2–3 ) : 62 – 64 .
- Ullmann , F. and Wagner , C. 1907 . Reaction of substituted o-chlorobenzoic acid in presence of copper . Ann. , 355 : 359 – 71 .
- Golberg , A. and Wragg , H. 1958 . Xanthones: Cyclization of 3′ substituted 2-carboxydiphenylethers . J. Chem. Soc. , 859 : 4227 – 34 .
- Ullmann , F. and Kipper , H. 1905 . Methoxy-chlorobenzoic acid . Ber. , 35 ( 2 ) : 2120 – 26 .