PROCESS FOR THE PREPARATION OF 6-CHLORO-2,3,4,9-TETRAHYDRO-1H-CARBAZOLE-1-CARBOXAMIDE AND INTERMEDIATES THEREOF
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United States of America Patent
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Issued Date -
Oct 9, 2014
app pub date -
Oct 19, 2012
filing date -
Oct 20, 2011
priority date (Note) -
Abandoned
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Abstract
The invention relates to a novel process for the preparation of rac-6-Chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxamide (I) in pharmaceutically acceptable polymorphic form, through the conversion of a 3-bromo-2-oxo-cyclohexanecarboxylic acid alkyl ester into 6-chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxylic acid alkyl ester, which in turn is processed to yield the final product.
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