Tellurium imaging composition including improved reductant precursor and method
AssigneeEnergy Conversion Devices, Inc.
InventorsTerry T. Yu, Mei-Rong Yen
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Abstract
Imaging films and film-forming compositions are provided which include a reducible tellurium compound, a reductant precursor, a source of labile hydrogen incorporated in a matrix. The reductant precursors are of the formulae ##STR1## where Y.sub.1 is alkoxy, Y.sub.2 is chloro or alkoxy and Y.sub.3 is hydrogen, chloro or alkoxy. Methods are provided for synthesizing the reductant precursors.
Claims3
A method of synthesizing a naphthoquinone of the formula ##STR40## or an anthraquinone of the formula ##STR41## where Y.sub.1 is alkoxy having less than 6 carbon atoms and Y.sub.2 is chloro, comprising:
- adding slowly a reactive metal alkoxide corresponding to the desired alkoxy to a suspension of 2,3-dichloro-1,4-naphthoquinone at about ice bath temperature, to form the naphthoquinone, or 2,3-dichloro-1,4-anthraquinone, to form the anthraquninone.
A method of synthesizing a compound selected from the group consisting of a naphthoquinone of the formula ##STR42## and an anthraquinone of the formula ##STR43## where Y.sub.1 is alkoxy having less than 6 carbon atoms and Y.sub.2 is another alkoxy having less than 6 carbon atoms, the same or different than Y.sub.1, comprising:
- adding slowly a reactive metal alkoxide corresponding to the alkoxy of Y.sub.1 or Y.sub.2 to a suspension of 2,3-dichloro-1,4-naphthoquinone at about ice bath temperature for forming the naphthoquinone or 2,3-dichloro-1,4-anthraquinone for forming the anthraquinone to form the chloro-alkoxy compound and thereafter isolating and then similarly reacting the chloroalkoxy compound with a reactive metal alkoxide corresponding to the other alkoxy.
A method of synthesizing a 6,7-diphenyl-1,4-naphthoquinone of the formula ##STR44## where Y.sub.1 is alkoxy having less than 6 carbon atoms and Y.sub.2 is chloro, comprising:
- adding slowly a reactive metal alkoxide corresponding to the desired alkoxy to a suspension of 2,3-dichloro-6.7-diphenyl-1,4-naphthoquinone at about ice bath temperature to form the naphthoquinone.
Dependencies are inferred from the claim text.