摘要:
1-Methylpyrrole-2-acetonitrile is prepared by the reduction of .alpha.-imino-1-loweralkylpyrrole-2-acetonitrile using hydrogen sulfide as the reducing agent.
摘要:
The compounds are of the class of 5-aroyl-pyrrole alkanoic acids and corresponding acid derivatives thereof useful as anti-inflammatory agents and as synthetic intermediates.
摘要:
The compounds are of the class of 5-aroyl-pyrrole alkanoic acids and corresponding acid derivatives thereof useful as anti-inflammatory agents and as synthetic intermediates.
摘要:
The interaction of a 2-aryldithiolanium cation with an appropriate pyrrole-2-acetic acid derivative to give a 5-[2-aryl-2-(1,3-dithiolanyl)]pyrrole-2-acetic acid derivative which is then converted to the corresponding 5-aroylpyrrole-2-acetic acid derivative.
摘要:
Catalytic dehydrogenation of .DELTA.-2,.alpha.-pyrrolidenemalonates and .DELTA.-2,.alpha.-pyrrolidenemalononitriles yields pyrrole-2-acetates and pyrrole-2-acetonitriles, respectively. Subsequent hydrolysis of the latter affords pyrrole-2-acetic acids.
摘要:
A process of preparing certain 5-aroyl-pyrrole-2-alkanoic acid derivatives using phosgene and certain 5-unsubstituted pyrroles as starting materials, and certain novel 5-chlorocarbonyl-pyrrole precursors.
摘要:
A process for rearranging .alpha.-acyl pyrroles to .beta.-acyl pyrroles which comprises reacting the former with an excess of a strong, anhydrous, non-oxidizing acid, preferably with heating.