108783-92-2Relevant academic research and scientific papers
SYNTHESIS OF 2,3-DIALKOXY-1H-PYRROLE VIA REDUCTION OF DIOXOPYRROLINE WITH SODIUM HYDROSULFITE
Sano, Takehiro,Seki, Masaharu,Toda, Jun,Tsuda, Yoshisuke
, p. 2541 - 2548 (2007/10/02)
Reduction of 1H-pyrrole-2,3-dione (3 and 7) with sodium hydrosulfite took place selectively in a 1,4-manner.Methylation of the product with diazomethane gave 1,5-dihydro-3-methoxy-2H-pyrrol-2-one (5 and 8) in good yield.Treatment of the methyl ether (5 or
FIVE-MEMBERED 2,3-DIOXOHETEROCYCLES. XXV. REACTION OF 4-UNSUBSTITUTED AND 4-HALOGENO-5-ARYL-2,3-DIHYDRO-2,3-FURANDIONES WITH BENZYLIDENEAMINES. EFFECT OF THE STRUCTURE OF THE REAGENTS ON THE DIRECTION OF REACTION
Karpova, L. N.,Kolotova, N. V.,Shurov, S. N.,Andreichikov, Yu. S.
, p. 596 - 601 (2007/10/02)
1-Substituted 5-aryl-4-aroyl-3-hydroxy-2,5-dihydro-2-pyrrolones were obtained by the reaction of 5-aroyl-2,3-dihydro-2,3-furandiones with N-(4-dimethylaminobenzylidene)amines.In the case of benzylideneanilines containing p-methoxy and p-nitro groups in the aldehyde fragment the 3-substituted 2,6-diaryl-3,4-dihydro-2H-1,3-oxazin-4-ones are formed.The reaction of 5-aryl-4-halogeno-2,3-dihydro-2,3-furandiones with N-benzylideneanilines leads to the substituted amides of 4-aryl-3-halogeno-2,4-dioxobutyric acids or 1,5-diaryl-4-aroyl-3-hydroxy-2,5-dihydro-2-pyrrolones, depending on the conditions.
FIVE-MEMBERED 2,3-DIOXO HETEROCYCLES. 2. SYNTHESIS AND -SIGMATROPIC REARRANGEMENT OF 4-ACYL-3-DIPHENYLMETHOXY-1,5-DIPHENYL-2,5-DIHYDROPYRROL-2-ONES
Andreichikov, Yu. S.,Gein, V. L.,Anikina, I. N.
, p. 517 - 519 (2007/10/02)
4-Acyl-1,5-diphenyltetrahydropyrrole-2,3-diones react with diphenyldiazomethane to give O-alkylation products, which upon heating undergo -sigmatropic suprasurface rearrangement to form 4--1,5-diphenyltetrahydropyrrole-2,3-diones.
