Method for Preparing Hexahydro-8-Hydroxy-2, 6-Methano-2H-Chinolizin-3 (4H) -One Esters
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United States of America Patent
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Issued Date -
Dec 27, 2007
app pub date -
Nov 25, 2004
filing date -
Nov 25, 2004
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Abandoned
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Abstract
The invention concerns a method for preparing optionally substituted 3-indolcarboxylic acid esters, with hexahydro-8-hydroxy-2,6-methano-2H-chinolizin-3(4H)-one. The invention is characterized in that the optionally substituted 3-indolcarboxylic acid is converted by means of a suitable halogenating agent, into corresponding acid halide, preferably corresponding acid chloride, and the latter is transformed with hexahydro-8-hydroxy-2,6-methano-2H-chinolizin-3(4H)-one. The invention is characterized in that the entire reaction occurs in acid medium with a maximum pH of 7.
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