The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 3-Methyl-1H-pyrrole( cas:616-43-3 ) is researched.Formula: C5H7N.Sicre, M. A.; Peulve, S.; Saliot, A.; de Leeuw, J. W.; Baas, M. published the article 《Molecular characterization of the organic fraction of suspended matter in the surface waters and bottom nepheloid layer of the Rhone Delta using analytical pyrolysis》 about this compound( cas:616-43-3 ) in Organic Geochemistry. Keywords: benthic nepheloid layer formation Rhone Delta; organic suspended matter Rhone Delta. Let’s learn more about this compound (cas:616-43-3).
Curie Point-pyrolysis-gas chromatog. (CuPy-GC) and Curie Point-pyrolysis-gas chromatog.-mass spectrometry (CuPy-GC-MS) were applied to characterize the macromol. content of the suspended particles in the surface waters and benthic nepheloid layer of the Rhone Delta. The chromatogram of the pyrolyzate of the Rhone River particles revealed a low pyrolysis yield from the riverine material in which polysaccharides and lipid-derived substances prevailed. The absence of levoglucosan and other pyrolysis products related to cellulose suggested that no intact polysaccharides were present. Lignin-derived products were virtually absent. In the salinity gradient, a wide variety of products, including saturated and monounsaturated acids, phytadienes, n-alkylnitriles and pyrolysis products from proteins were determined, indicating a major contribution from freshly produced autochthonous material. A suite of dipeptides of bacterial origin was also identified. Lignin-derived products from terrigenous sources were minor. Further offshore qual. differences, with respect to the previous samples were apparent. Polysaccharides were less pronounced, possibly due to the dilution of the suspended load of the waters, and/or the microbial consumption of these readily degradable compounds In contrast, the relative abundances of autochthonously derived compounds increased as a result of nutrient inputs from the Rhone River which fertilize coastal waters. The occurrence of 1,1,3,3,5,5, hexamethylcyclotrioxane as well s styrene provided indications of anthropogenic inputs to the site. The macromol. constituents of suspended solids in the benthic nepheloid layer strikingly resembled those of the riverine material. Polysaccharides together with phytadienes and C14, C16 and C18 acids accounted for the major pyrolysis products. The persistence of this fingerprint in the benthic layer was observed from the mouth to stations ZD1 and ZA7. Beyond this point, due to the influence of the Liguro-Provencal current flowing westwards, the composition of the pyrolyzates changed towards a marine signature. Flocculation of suspended matter in which polysaccharides would make particles stick together or salt flocculation were proposed as an alternative scenario to explain the formation of the nepheloid layer.
After consulting a lot of data, we found that this compound(616-43-3)Formula: C5H7N can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate