77867-47-1Relevant academic research and scientific papers
Two substituted 2-pyrrolin-5-ones: Chains built from a single N - H...O hydrogen bond
Zhang, Zhen-Feng,Wang, Jian-Ge,Wang, Si-Qian,Qu, Gui-Rong
, p. o565-o567 (2007)
In each of methyl 2-methyl-5-oxo-2-pyrroline-3-carboxyl-ate, C7H9NO3, and 3-acetyl-2-methyl-2-pyrrolin-5-one, C7H9NO2, the pyrrolinone ring is planar. In each structure, mol-ecules are linked into simple chains by way of a single N - H...O hydrogen bond. International Union of Crystallography 2007.
PYRROLE DERIVATIVES FROM α-KETOALDEHYDES
Feliciano, Arturo San,Caballero, Esther,Pereira, Juan A. P.,Puebla, Pilar
, p. 6553 - 6562 (2007/10/02)
The reaction between enamines from β-ketoesters or β-ketonitriles and α-ketoaldehydes was investigated.Besides simple pyrrole and pyrrolinone derivatives, some compounds containing two units of ketoaldehyde were obtained.The structures of the reaction products were established by spectral methods, mainly through the use of two-dimensional NMR techniques and heteronuclear NOE-difference experiments.
4-(Phenylthio)-pyrrole-3-carboxylic Acid Esters
Eiden, Fritz,Grusdt, Ulrike
, p. 1020 - 1031 (2007/10/02)
Dihydro(dimethoxy)methylfurancarboxylic acid esters 4A/4B have been applied to the synthesis of the title compounds.With amines as catalysts they react with thiophenols to give the addition products 12a-d, which upon heating with acids eliminate methanol to form the furancarboxylic acid esters 13a-b and 17, whereas reactions with ammonia or amines lead to the pyrrolecarboxylic acid esters 20a-e.Reactions of 4 with 2-aminothiophenol yield the fused pyrrole and pyrrolidine derivatives 15 and 16.Compounds 20b and e were transformed to the benzothiopyranopyrrole carboxylic acid esters 23a and b.
