Process for obtaining anthraquinodimethane derivatives and anthrone derivatives
AssigneeXerox Corporation
InventorsBeng S. Ong, Barkev Keoshkerian
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Abstract
Disclosed is a process for the preparation of anthraquinodimethane derivatives and anthrone derivatives useful as electron transporting molecules which comprises the condensation reaction of anthraquinones with active methylene compounds in the presence of a Lewis acid and a base.
Claims33
A process for the preparation of anthraquinodimethane derivatives and anthrone derivatives which comprises the condensation reaction of anthraquinones with active methylene compounds in the presence of an organic solvent, a Lewis acid, and a base.
A process for the preparation of anthraquinodimethane derivatives, which comprises reacting in the presence of an organic solvent anthraquinones, active methylene compounds, base and Lewis acid in accordance with the following reaction scheme:
- ##STR7## wherein A is selected from the group consisting of CN, and COOR, wherein R is an alkyl group or an aryl group;
- X and Y are independently selected from the group consisting of aryl, alkyl, halide, hydroxy, CN, NO.sub.2, COR, and COOR;
- wherein R is an alkyl group;
- m is a number of from zero to 3;
- and n is a number of from zero to 3.
A process for the preparation of anthrone derivatives which comprises reacting in the presence of an organic solvent anthraquinone with active methylene compounds, a Lewis acid and a base in accordance with the following reaction scheme:
- ##STR8## wherein A is independently selected from the group consisting of CN, and COOR, wherein R is an alkyl group or an aryl group;
- x and y are independently selected from the group consisting of aryl, alkyl, halide, hydroxy, CN, NO.sub.2, COR, and COOR;
- wherein R is an alkyl group;
- m is a number of from zero to 3;
- and n is a number of from zero to 3.
A process for the preparation of an anthraquinodimethane derivative comprising reacting in the presence of an organic solvent anthraquinone with an active methylene compound, a Lewis acid, and a base in accordance with the following reaction scheme:
- ##STR9## wherein the A substituents are COOR, the B substituents are CN;
- x and y are independently selected from the group consisting of aryl, alkyl, halide, hydroxy, CN, NO.sub.2, COR, and COOR;
- m is a number of from zero to 3;
- and n is a number of from zero to 3.
A process for the preparation of anthraquinodimethane derivative and anthrone derivatives which consists essentially of the reaction of an anthraquinone with an active methylene compound selected from the group consisting of malononitrile, malonate, dinitromethane, and betadiketone in the presence of an organic solvent, a base, and a Lewis acid, which reaction is affected at a temperature of from about 0.degree. C. to about 30.degree. C.
Dependencies are inferred from the claim text.