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Recent advances in the synthesis of quinolines: a review.
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a Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat, India E-mail: [email protected] Fax: +91-079-26308545 Tel: +91-079-26300969
Quinolines have become important compounds because of their variety of applications in medicinal, synthetic organic chemistry as well as in the field of industrial chemistry. In recent years there are greater societal expectations that chemists should produce greener and more sustainable chemical processes. This review article gives information about the green and clean syntheses using alternative reaction methods for the synthesis of quinoline derivatives. The article includes synthesis by microwave, using clay or some other catalyst which could be recycled and reused, one-pot reaction, solvent-free reaction conditions, using ionic liquids, ultrasound promoted synthesis and photocatalytic synthesis (UV radiation).
- This article is part of the themed collections: Organic chemist’s toolbox and Chemistry for Medicine: Special Collection for RSC Advances
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S. M. Prajapati, K. D. Patel, R. H. Vekariya, S. N. Panchal and H. D. Patel, RSC Adv. , 2014, 4 , 24463 DOI: 10.1039/C4RA01814A
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Friedländer synthesis using 2-aminobenzaldehyde and acetaldehyde; Knorr quinoline synthesis, using a β-ketoanilide and sulfuric acid; Niementowski quinoline synthesis, using anthranilic acid and ketones; Pfitzinger reaction using an isatin with base and a carbonyl compound to yield substituted quinoline-4-carboxylic acids
dilute HCl to prepare quinoline-4-carboxylic acid (28) in good to excellent yields.7 The authors claimed that using enaminone as a replacement for 1,3-dicarbinols improves the yield and prac-ticality of the reaction. 2.5. Skraup/Doebner–von Miller quinoline synthesis A synthesis of quinoline via aniline and glycerine in the pres-
This review article gives information about the green and clean syntheses using alternative reaction methods for the synthesis of quinoline derivatives. The article includes synthesis by microwave, using clay or some other catalyst which could be recycled and reused, one-pot reaction, solvent-free reaction conditions, using ionic liquids ...