HETEROCYCLIC CHEMISTRY GILCHRIST PDF

Classification[ edit ] Although heterocyclic chemical compounds may be inorganic compounds or organic compounds, most contain at least one carbon. While atoms that are neither carbon nor hydrogen are normally referred to in organic chemistry as heteroatoms, this is usually in comparison to the all-carbon backbone. But this does not prevent a compound such as borazine which has no carbon atoms from being labelled "heterocyclic". The saturated heterocycles behave like the acyclic derivatives. Thus, piperidine and tetrahydrofuran are conventional amines and ethers, with modified steric profiles. Therefore, the study of heterocyclic chemistry focuses especially on unsaturated derivatives, and the preponderance of work and applications involves unstrained 5- and 6-membered rings.

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Classification[ edit ] Although heterocyclic chemical compounds may be inorganic compounds or organic compounds, most contain at least one carbon. While atoms that are neither carbon nor hydrogen are normally referred to in organic chemistry as heteroatoms, this is usually in comparison to the all-carbon backbone. But this does not prevent a compound such as borazine which has no carbon atoms from being labelled "heterocyclic".

The saturated heterocycles behave like the acyclic derivatives. Thus, piperidine and tetrahydrofuran are conventional amines and ethers, with modified steric profiles. Therefore, the study of heterocyclic chemistry focuses especially on unsaturated derivatives, and the preponderance of work and applications involves unstrained 5- and 6-membered rings.

Included are pyridine, thiophene, pyrrole, and furan. Another large class of heterocycles are fused to benzene rings, which for pyridine, thiophene, pyrrole, and furan are quinoline, benzothiophene, indole, and benzofuran, respectively. Fusion of two benzene rings gives rise to a third large family of compounds, respectively the acridine, dibenzothiophene, carbazole, and dibenzofuran. The unsaturated rings can be classified according to the participation of the heteroatom in the conjugated system, pi system.

Those containing one heteroatom are, in general, stable. Those with two heteroatoms are more likely to occur as reactive intermediates.

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Antony marked it as to-read Jul 15, The first half of Heterocyclic Chemistry covers general properties of heterocyclic compounds and general methods for their preparation. Majid Raja gilchrjst it as to-read Jun 20, Includes a guide to the naming of Heterocyclic chemistry gilchrist ask other readers questions about Heterocyclic Chemistryplease sign up. Ellis2 books Alexander F. Thanks for telling us about the problem. Acheson1 book Douglas W.

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