17825-86-4Relevant articles and documents
A new maturity indicator of sedimentary organic matter based on thermal fission of allylic bond in porphyrins
Nomoto, Shinya,Kozono, Masaki,Mita, Hajime,Shimoyama, Akira
, p. 1174 - 1175 (2001)
A 3-ethyl-4-methylpyrrole unit in etioporphyrin was shown to be converted to a 3,4-dimethylpyrrole unit by the action of heat, which was proved to be catalyzed by Na-montmorillonite. Time courses of the reaction could be followed by analyzing 2-ethyl-3-me
Fragmentation of Nitro Derivatives of Pyrrole Pigments and its Relationship to the Gmelin Reaction
Ribo, Josep,Trull, Francesc
, p. 1 - 7 (2007/10/02)
The 5-(arylnitromethylene)-3-pyrrolin-2-ones 1-5, the 5-nitrobilin-1,19-diones 7,8, and the 5-nitropyrromethenone 6 are shown to decompose in acidic media to yield maleimides according to fragmentation reactions of nitronic acids.This fragmentation reacti