Method for Preparing 2-Alkoxy-5-Tetrazolyl-Benzaldehyde Compound
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United States of America Patent
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Issued Date -
Nov 15, 2007
app pub date -
Nov 7, 2005
filing date -
Nov 11, 2004
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Abstract
The present invention provides a method for safely and efficiently preparing 2-alkoxy-5-tetrazolyl-benzaldehyde compounds by formylating (4-alkoxyphenyl)-tetrazole compounds. The present invention provides a method for preparing 2-alkoxy-5-(alkyltetrazole-5-yl)-benzaldehyde by reacting a 5-(4-alkoxyphenyl)-alkyl-tetrazole with hexamethylenetetramine in a sulfonic acid solvent, followed by hydrolysis; and a method for preparing 2-alkoxy-5-(tetrazole-2-yl)-benzaldehyde compounds by reacting 2-(4-alkoxyphenyl)-2H-tetrazole compounds with hexamethylenetetramine in a sulfonic acid solvent, followed by hydrolysis.
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