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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.
2,2'-Dipyrromethene, often called just dipyrromethene or dipyrrin, is a chemical compound with formula C 9 H 8 N 2 whose skeleton can be described as two pyrrole rings C 5 N connected by a methyne bridge =CH– through their nitrogen-adjacent (position-2) carbons; the remaining bonds being satisfied by hydrogen atoms.
In organic chemistry, the Paal–Knorr synthesis is a reaction used to synthesize substituted furans, pyrroles, or thiophenes from 1,4-diketones.It is a synthetically valuable method for obtaining substituted furans and pyrroles, which are common structural components of many natural products.
Polypyrrole Pyrrole can be polymerised electrochemically. [1] Polypyrrole (PPy) is an organic polymer obtained by oxidative polymerization of pyrrole. It is a solid with the formula H(C 4 H 2 NH) n H. It is an intrinsically conducting polymer, used in electronics, optical, biological and medical fields. [2] [3]
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Pyrrole-2-carboxylic acid is an organic compound with the formula HNC 4 H 3 CO 2 H. It is one of two monocarboxylic acids of pyrrole. It is a white solid. It arises in nature by dehydrogenation of the amino acid proline. [1] It also arises by carboxylation of pyrrole. [2] The ethyl ester of this acid is readily prepared from pyrrole. [3]
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