Mixed chalcogenide pyrylium salts of a Lewis base

Details Mixed chalcogenide pyrylium salts of a Lewis base Mixed chalcogenide pyrylium salts of a Lewis base

1988-10-24

1990-04-10

Gerstl, Robert

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

514432, 514451, 540 1, 544 13, 544415, C07D42106, A61K 3133

Patent

active

049161270

ABSTRACT:
There are disclosed certain pyrylium salts and a method of making them. The dyes are useful both medicinally in photodynamic therapy and in photoconductive compositions, photoresist and lithographic compositions or optical recording discs. The salts are mixed seleno- or telluropyrylium compounds having a singlet oxygen quantum efficiency of at least 0.005 when exposed as described at wavelengths between about 650 and 1000 nanometers, and a Lewis base anion.

REFERENCES:
patent: 4365017 (1982-12-01), Detty
patent: 4584258 (1986-04-01), Detty et al.
Cotton and Wilkinson, Advanced Inorganic Chemistry, p. 572 (1962).
Gordon et al., The Chemists Companion, pp. 383-386, (1972).

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