The Forgotten Pyrazines: Exploring the Dakin–West Reaction
作者:Martien A. Würdemann、Cristina Niţu、Stefaan M. A. De Wildeman、Katrien V. Bernaerts、Romano V. A. Orru
DOI:10.1002/chem.202000475
日期:2020.6.26
Pyrazines are an underreported class of N‐heterocycles available from nitrogen‐rich biomass presenting an interesting functional alternative for current aromatics. In this work, access to pyrazines obtained from amino acids by using the 90 year old Dakin–West reaction was explored. After a qualitative screening several functional proteinogenic amino acids proved good substrates for this reaction, which
Reaction of some diketones with 5-aminolevulinic acid in acid solution
作者:Anthony R Butler、Sharon D George
DOI:10.1016/s0040-4020(01)87976-x
日期:1993.8
Some 2,4-diketones react with 5-aminolevulinic acid in acid solution to form pyrroles. There are two modes of cyclisation, one leading to the Knorr and the other to the Fischer-Fink product. By a consideration of the products obtained from pentane-, hexane-, 3-methylpentane-, 3-isopropylpentane-, 3,3-dimethylpentane-, 1,1,1-trifluoropentane- 1,1,1,5,5,5-hexafluoro- pentane-2,4-dione and ethyl acetoacetate