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  2. Pyrrole - Wikipedia

    en.wikipedia.org/wiki/Pyrrole

    Pyrrole is an extremely weak base for an amine, with a conjugate acid pK a of −3.8. The most thermodynamically stable pyrrolium cation (C 4 H 6 N +) is formed by protonation at the 2 position. Substitution of pyrrole with alkyl substituents provides a more basic molecule—for example, tetramethylpyrrole has a conjugate acid pK a of +3.7.

  3. Pyrrolidine - Wikipedia

    en.wikipedia.org/wiki/Pyrrolidine

    Pyrrolidine is a base. Its basicity is typical of other dialkyl amines. [7] Relative to many secondary amines, pyrrolidine is distinctive because of its compactness, a consequence of its cyclic structure. Pyrrolidine is used as a building block in the synthesis of more complex organic compounds.

  4. Heterocyclic amine - Wikipedia

    en.wikipedia.org/wiki/Heterocyclic_amine

    Nicotine is a molecule containing a pyrrolidine ring attached to a ring of pyridine (other heterocyclic amine). Nicotine belongs to a group of compounds known as alkaloids, which are naturally occurring organic compounds with nitrogen in them. Pyrrole is another compound made up of molecules with a five-membered heterocyclic ring. These ...

  5. Pyrrolidine alkaloids - Wikipedia

    en.wikipedia.org/wiki/Pyrrolidine_alkaloids

    Alkaloids with partial pyrrolidine structure are usually sub-categorized based on their occurrence and biogenetic origin. Hygrin and cuscohygrin were isolated from the leaves of the coca shrub, [2] while (-)-codonopsinine was isolated from the woodland vine tiger bell.

  6. Heterocyclic compound - Wikipedia

    en.wikipedia.org/wiki/Heterocyclic_compound

    Included are pyridine, thiophene, pyrrole, and furan. Another large class of organic heterocycles refers to those fused to benzene rings. For example, the fused benzene derivatives of pyridine, thiophene, pyrrole, and furan are quinoline, benzothiophene, indole, and benzofuran, respectively. The fusion of two benzene rings gives rise to a third ...

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  8. The 1 food you should be eating more of, according to ... - AOL

    www.aol.com/news/1-food-eating-more-according...

    Change 1: Eat more beans for better health. First and foremost, the committee recommends eating more beans, peas and lentils, while reducing the intake of red and processed meats. Beans, peas and ...

  9. Basic aromatic ring - Wikipedia

    en.wikipedia.org/wiki/Basic_aromatic_ring

    In non-basic aromatic rings the lone pair of electrons of the nitrogen atom is delocalized and contributes to the aromatic pi electron system. In these compounds the nitrogen atom is connected to a hydrogen atom. Examples of non-basic nitrogen-containing aromatic rings are pyrrole and indole. Pyrrole contains a lone pair that is part of the pi ...