The formation of colored materials from leuco bases such as 4 and 5 is accomplished by treatment with acids such as acid clay, bisphenol A, acetic acid, or silica gel.39 For leuco base 4 the leaving group is hydroxy, alkoxy, or cyanide, or a nitrogen-containing heterocycle.
Action of Acids
11 августа, 2015 
Malyar 
Опубликовано в рубрике Chemistry and Applications of Leuco Dyes