Persistence, dyestuffs

The above reactions can be used to prepare a variety of multi-purpose intermediates that are of great value in dyestuffs manufacture. Many of these intermediates were prepared and found to be of value in dye manufacture before the orientation of their substituents was established. This early lack of basic knowledge resulted in these intermediates being given trivial names that have persisted in the dyestuffs industry. 

Garrison AW, Hill DW. 1972. Organic pollutants from mill persist in downstream waters. Am Dyestuff Rep 21-25. 

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