Chemistry of Heterocyclic Compounds, Oxazoles: Synthesis, Reactions, and Spectroscopy, Part A

2004 ◽  
Vol 21 (2) ◽  
pp. E9 ◽  
Author(s):  
Victor Snieckus
Keyword(s):  
Heterocyclic Compounds ◽  
Synthesis Reactions

Review on Synthesis, Reactions and Biological Properties of Seven Member Heterocyclic Compounds: Azepine, Azepane, Azepinone

2021 ◽  
Vol 25 ◽  
Author(s):  
Manvinder Kaur ◽  
Sonali Garg ◽  
Dharambeer S. Malhi ◽  
Harvinder S. Sohal
Keyword(s):  
Microwave Irradiation ◽  
Heterocyclic Compounds ◽  
Ring Expansion ◽  
Biological Properties ◽  
Synthesis Reaction ◽  
Therapeutic Implications ◽  
Synthesis Reactions ◽  
Derivatives Of

Abstract: Seven membered heterocyclic Azepine and its derivatives have great pharmacological and therapeutic implications. In this review, the literature of the last fifty years has been exploited for the synthesis, reaction, and biological properties of these seven-member heterocyclic compounds. Most of the mechanisms involved the ring expansion of either five or six-membered compounds using various methods such as thermally, photo-chemically, and microwave irradiation. The systematically designed schemes involve the synthesis of different derivatives of azepine, azepinone, azepane, etc. using similar moieties by the different researchers. However, there is much work yet to be done in the biological section, as it is not explored and reported in the literature; therefore, N-containing seven-membered heterocycles still have much scope for the researchers.

Fluoro Aryl Azides: Synthesis, Reactions and Applications

2020 ◽  
Vol 24 (11) ◽  
pp. 1161-1180 ◽  
Author(s):  
Elisa Leyva ◽  
Matthew S. Platz ◽  
Silvia E. Loredo-Carrillo ◽  
Johana Aguilar
Keyword(s):  
Organic Synthesis ◽  
Heterocyclic Compounds ◽  
Photoaffinity Labeling ◽  
Analytical Techniques ◽  
Biochemical Process ◽  
Insertion Reactions ◽  
Complete Understanding ◽  
Aryl Azides ◽  
Experimental Conditions ◽  
Synthesis Reactions

Background: The complex photochemistry of aryl azides has fascinated scientists for several decades. Spectroscopists have investigated the intermediates formed by different analytical techniques. Theoretical chemists have explained the intrinsic interplay of intermediates under different experimental conditions. Objective & Method: A complete understanding of the photochemistry of a given fluoro aryl azide is a basic requisite for its use in chemistry. In this review, we will discuss the synthesis of several fluoro substituted aryl azides and the reactions and intermediates generated upon photolysis and thermolysis of these azides and some examples of their applications in photoaffinity labeling and organic synthesis. Conclusion: In spite of the extensive research on the photochemistry of fluoro aryl azides, there are some areas that remain to be investigated. The application of this reaction in the synthesis of novel heterocyclic compounds has not been fully studied. Since fluorophenyl azides are known to undergo C-H and N-H insertion reactions, they could be used to prepare new fluorinated molecules or in the biochemical process known as photoaffinity labeling.

scholarly journals A review on heterocyclic moieties and their applications

2016 ◽  
Vol 2 (1) ◽  
pp. 99-115
Author(s):  
Syed Sabir ◽  
Mansour Ibrahim Alhazza ◽  
Ahmed Aidid Ibrahim
Keyword(s):  
Present Article ◽  
Heterocyclic Compounds ◽  
Corrosion Inhibitors ◽  
Antimicrobial Agents ◽  
State Of The Art ◽  
Synthesis Methods ◽  
Wide Range ◽  
Heterocyclic Derivatives ◽  
Synthesis Reactions ◽  
Heterocyclic Moiety

AbstractSeveral described in literature crosslinking methods to obtain heterocyclic moieties were discussed in this review. Selected important properties of polyamides and their synthesis reactions were briefly presented. The heterocyclic moieties displayed a wide range of applications in medicine and industry. New heterocyclic derivatives obtained by linking heterocyclic moiety to amic acids and imides found diverse applications: as surfactants, antimicrobial agents, or corrosion inhibitors. The present article describes the state-of-the art synthesis methods of the heterocyclic compounds and their application.

scholarly journals Efficient synthesis, reactions and spectral characterization of pyrazolo[4’,3’:4,5]thieno[3,2-d] pyrimidines and related heterocycles

2019 ◽  
Vol 25 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Remon M. Zaki ◽  
Adel M. Kamal El-Dean ◽  
Shaban M. Radwan ◽  
Ahmed F. Saber
Keyword(s):  
Nucleophilic Substitution ◽  
Heterocyclic Compounds ◽  
Cycloaddition Reaction ◽  
Amino Derivative ◽  
Triethyl Orthoformate ◽  
Amino Group ◽  
Efficient Synthesis ◽  
Nitrogen Nucleophiles ◽  
Synthesis Reactions

AbstractNew pyrazolothienopyrimidines were synthesized. The key intermediate 4-aminothieno[2,3-c]pyrazole-5-carbonitrile 1 was converted to the chloroacetyl amino derivative 2 followed by nucleophilic substitution and Dimorth rearrangement upon treatment with nitrogen nucleophiles to give the pyrimidinones 3a-c. Treatment of 3a with formaldehyde and with triethyl orthoformate afforded the respective tetracyclic derivatives 4 and 5. Condensation of the amino group in the o-aminocarbonitrile 1 with triethyl orthoformate followed by cycloaddition reaction with hydrazine led to the formation of pyrazolothienopyrimidine 8. Compound 8 was used as a synthetic precursor to heterocyclic compounds comprised of pyrazole, triazole, triazine, and triazepine derivatives.

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