𝔖 Bobbio Scriptorium
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Phototransformation of Dichlorophen in Aqueous Phase

✍ Scribed by Mansfield, Elka; Richard, Claire

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
313 KB
Volume
48
Category
Article
ISSN
1526-498X

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✦ Synopsis

The photolysis of dichlorophen (DCP) in acidic medium yields 4chloro-4-hydroxy-2,2'-methylenediphenol (I) in the absence of oxygen and a benzoquinone-like derivative (11) in oxygenated solution. At pH = 9, DCP is in monoanionic form, and three products, I, I1 and 4-chloro-2,2'-methylenediphenol (111) are detected after irradiation of deoxygenated solutions of DCP. Formation of 111 is also observed in acidic or neutral solutions containing a low percentage of isopropanol. These results can be explained by the formation of a carbene after HCI elimination and reaction of this intermediate with water, oxygen, alcohol, anionic form of I or DCP.

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