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Merbromin (mercurochrome) — a photosensitizer for singlet oxygen reactions

1990; Elsevier BV; Volume: 5; Issue: 1 Linguagem: Inglês

10.1016/1011-1344(90)85007-j

1873-2682

Klaus Gollnick, Stephan Held,

Synthesis and Catalytic Reactions

Merbromin, produced in many countries and used world wide as an antiseptic under the trademark "mercurochrome", is shown to be an efficient sensitizer for type II (singlet oxygen) photo-oxygenations by using 2-methyl-2-butene, (+)-limonene, (+)-alpha-pinene, alpha,alpha'-dimethylstilbenes and (--)-L-methionine as oxygen acceptors. Type I photo-oxygenations are negligible. An estimate of the quantum yield of singlet oxygen formation by merbromin in methanol gives a value of about 0.1.