28478-14-0Relevant academic research and scientific papers
Synthesis, NMR Spectra, and Photoelectron Spectra of Cyclic Ketene N,X-Acetals (2-Alkylidene-N-heterocycles)
Quast, Helmut,Ach, Manfred,Kindermann, Markus K.,Rademacher, Paul,Schindler, Michael
, p. 503 - 516 (2007/10/02)
Deprotonation by sodium hydride of the N-methyl-2-alkylazolium salts 10c, 14-16, and 18 and of the perimidinium salt 20 as well affords the corresponding ketene N,X-acetals 1c, 3-5, 7 and 8 as air-sensitive distillable oils or low-melting crystals.The α-c
An improved one-pot method for the preparation of 2-substituted 1H-perimidines
Maquestiau,Berte,Mayence,Vanden Eynde
, p. 2171 - 2180 (2007/10/02)
2-Substituted 1H-perimidines are readily prepared, in high yields, by refluxing a mixture of sodium pyrosulfite, an aldehyde, and 1,8-diaminonapthalene in aqueous ethanol or N,N-dimethylformamide. The method is of wide applicability except from
