477776-17-3Relevant academic research and scientific papers
Method for preparing heterocyclic-carboxylic acids
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, (2008/06/13)
The present invention relates to a method for preparing quinoxaline-5- and 6-carboxylic acids. The method comprises contacting an aqueous suspension of a 5- or 6-hydroxymethyl quinoxaline with oxygen in the presence of a transition metal catalyst, to form the respective quinoxaline-5- or 6-carboxylic acid. The method for oxidizing benzylic methyl groups may also be employed to prepare a wide variety of heterocyclic carboxylic acid compounds.
Method for preparing heterocyclic-carboxylic acids
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, (2008/06/13)
The present invention relates to a method for preparing quinoxaline-5- and 6-carboxylic acids. The method comprises contacting an aqueous alkaline suspension of a 5- or 6-halomethyl quinoxaline with oxygen in the presence of a transition metal catalyst, to form the respective quinoxaline-5- or 6-carboxylic acid. The method for oxidizing benzylic methyl groups may also be employed to prepare a wide variety of heterocyclic carboxylic acid compounds.
Pyridyl- and/or pyridoyl-(piperid-4-yl) ureas and analogues thereof
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, (2008/06/13)
The invention concerns the preparation of compounds of formula STR1 and acid addition and quaternary ammonium salts thereof, wherein the dotted line represents an optional bond, Ar represents a ring system of formula STR2 in which Q is O, S, --CR7/s
Piperid-4-yl ureas and thio ureas used as antidepressant agents
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, (2008/06/13)
The invention concerns the preparation of compounds of formula STR1 and acid addition and quaternary ammoniun salts thereof, wherein the dotted line represents an optional bond, Ar represents a ring system of formula STR2 in which Q is O, S, --CR7/s
