Substituted 1-(21-aminovinyl)pyrroles and pyrrolo[1,2-a]pyrazines from the reaction of a pyrazolium methanide 1,3-dipole with dialkyl acetylenedicarboxylates: a 1,2-carbon to nitrogen rearrangement in the pyrazole system
摘要:
Treatment of 1-ethoxycarbonylmethyl-2,3,4,5-tetraarylpyrazolium salts with base in the presence of dialkyl acetylenedicarboxylates provides a new route to substituted 1-(2(1)-aminovinyl)pyrroles and pyrrolo[1,2-a]pyrazines.
Substituted 1-(21-aminovinyl)pyrroles and pyrrolo[1,2-a]pyrazines from the reaction of a pyrazolium methanide 1,3-dipole with dialkyl acetylenedicarboxylates: a 1,2-carbon to nitrogen rearrangement in the pyrazole system
摘要:
Treatment of 1-ethoxycarbonylmethyl-2,3,4,5-tetraarylpyrazolium salts with base in the presence of dialkyl acetylenedicarboxylates provides a new route to substituted 1-(2(1)-aminovinyl)pyrroles and pyrrolo[1,2-a]pyrazines.