pyrrole वाक्य
उदाहरण वाक्य
मोबाइल
- When pyrrole is mixed with the desired oxidizing agents at room temperature, the polymerization reaction begins immediately.
- His dissertation was " The raman spectra of pyrrole and some of its deuterium derivatives ".
- Simple monocyclic aromatic rings are usually five-membered rings like pyrrole or six-membered rings like pyridine.
- The mechanism of the Knorr pyrrole synthesis begins with condensation of the amine and ketone to give an imine.
- Use of ammonium hydroxide or ammonium acetate ( as reported by Paal ) gives the N-unsubstituted pyrrole.
- 1-Methylimidazole is also the precursor for the synthesis of the methylimidazole monomer of pyrrole-imidazole polyamides.
- It can be viewed as a structural analog of pyrrole, with antimony replacing the nitrogen atom of pyrrole.
- It can be viewed as a structural analog of pyrrole, with antimony replacing the nitrogen atom of pyrrole.
- Pyrrole rings such as porphyrins have also been used in coating nanomaterials or semiconductors for both homogeneous and heterogeneous catalysis.
- The imine then tautomerizes to an enamine, followed by cyclization, elimination of water, and isomerization to the pyrrole.
- The pyrrole synthesis requires a primary amine under similar conditions, or ammonia ( or ammonia precursors ) can be used.
- Alternatively, dipyrromethenes are prepared directly by reacting a pyrrole with an activated carboxylic acid derivative, usually an acyl chloride.
- Two molecules of dALA are then combined by porphobilinogen synthase to give porphobilinogen ( PBG ), which contains a pyrrole ring.
- Compounds analogous to thiophene include furan ( C 4 H 4 O ) and pyrrole ( C 4 H 4 NH ).
- It is also possible to use activated phenyl groups and electron-rich heterocycles such as furan, pyrrole, and thiophene.
- When researching pyrrole ring of structure K in fig . 4 was replaced by a series of aromatic systems having various substitution patterns.
- These are compounds containing an indole moiety, which consists of pyrrole ring fused to benzene to form 2, 3-benzopyrrole.
- This porphyrin ring consists of four pyrrole molecules cyclically linked together ( by methine bridges ) with the iron ion bound in the center.
- The Knorr pyrrole synthesis, reported by Knorr in 1884 is the synthesis of a substituted pyrrole from an amino-ketone and a ketone.
- The Knorr pyrrole synthesis, reported by Knorr in 1884 is the synthesis of a substituted pyrrole from an amino-ketone and a ketone.
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