1.02010-04-08 22:11:26 UTC2019-11-26 03:10:39 UTCFDB014718PyrroleFlavouring ingredient
Pyrrole has very low basicity compared to conventional amines and some other aromatic compounds like pyridine. This decreased basicity is attributed to the delocalization of the lone pair of electrons of the nitrogen atom in the aromatic ring. Pyrrole is a very weak base with a pKaH of about ?4. Protonation results in loss of aromaticity, and is, therefore, unfavorable.; Pyrrole is a heterocyclic aromatic organic compound, a five-membered ring with the formula C4H4NH. Substituted derivatives are also called pyrroles. For example, C4H4NCH3 is N-methylpyrrole. Porphobilinogen is a trisubstituted pyrrole, which is the biosynthetic precursor to many natural products.; The starting materials in the Piloty-Robinson pyrrole synthesis are 2 equivalents of an aldehyde and hydrazine. The product is a pyrrole with specific substituents in the 3 and 4 positions. The aldehyde reacts with the diamine to an intermediate di-imine (R?C=N?N=C?R), which, with added hydrochloric acid, gives ring-closure and loss of ammonia to the pyrrole. Pyrrole is found in tamarind and corn.1-Aza-2,4-cyclopentadiene1H-Pyrrole1H-Pyrrole, homopolymer1H-Pyrrole, potassium saltAzoleDivinyleneimineDivinylenimineFEMA 3386ImidoleIndoleMonopyrrolePolypyrrolePyrollePyrrholPyrrolPyrrolineC4H5N67.089267.0421991651H-pyrrolepyrrole109-97-7N1C=CC=C1InChI=1S/C4H5N/c1-2-4-5-3-1/h1-5HKAESVJOAVNADME-UHFFFAOYSA-N belongs to the class of organic compounds known as heteroaromatic compounds. Heteroaromatic compounds are compounds containing an aromatic ring where a carbon atom is linked to an hetero atom.Heteroaromatic compoundsOrganic compoundsOrganoheterocyclic compoundsHeteroaromatic compoundsAromatic heteromonocyclic compoundsAzacyclic compoundsHydrocarbon derivativesOrganonitrogen compoundsOrganopnictogen compoundsPyrrolesAromatic heteromonocyclic compoundAzacycleHeteroaromatic compoundHydrocarbon derivativeOrganic nitrogen compoundOrganonitrogen compoundOrganopnictogen compoundPyrrolea pyrrolepyrroleLiquidlogp0.76logs0.82solubility4.45e+02 g/lmelting_pointMp -24°logp1.05pka_strongest_acidic18iupac1H-pyrroleaverage_mass67.0892mono_mass67.042199165smilesN1C=CC=C1formulaC4H5NinchiInChI=1S/C4H5N/c1-2-4-5-3-1/h1-5HinchikeyKAESVJOAVNADME-UHFFFAOYSA-Npolar_surface_area15.79refractivity20.82polarizability7.17rotatable_bond_count0acceptor_count0donor_count1physiological_charge0formal_charge0Specdb::EiMs1816Specdb::NmrOneD3791Specdb::NmrOneD4051Specdb::MsIr7038Specdb::MsIr7039Specdb::MsIr7040Specdb::CMs13704Specdb::CMs175353Specdb::MsMs12194Specdb::MsMs12195Specdb::MsMs12196Specdb::MsMs18866Specdb::MsMs18867Specdb::MsMs18868Specdb::MsMs452290Specdb::MsMs2683464Specdb::MsMs2683465Specdb::MsMs2683466Specdb::MsMs3021546Specdb::MsMs3021547Specdb::MsMs3021548HMDB3592419203#<Reference:0x00005556761da3e0>#<Reference:0x00005556761da1d8>#<Reference:0x00005556761da020>#<Reference:0x00005556761d9e68>#<Reference:0x00005556761d9c38>#<Reference:0x00005556761d9a80>BeerType 2specific0.00.00.0mg/100 gCornType 1specificZea mays4577Mung beanType 1specificVigna radiata157791Soy beanType 1specificGlycine max3847TacoType 2specific0.00.00.0mg/100 gTamarindType 1specificTamarindus indica58860Tortilla chipType 2specificetherealnuttysweetwarm