• Monika Kamboj
• Richa Khare
• Smriti Khare
• Anchal Rastogi

ABSTRACT: Crown ether’s discovery remains the remarkable growth in the chemistry. The first crown ether was synthesized by noble prize winner, Pedersen nearly half decade ago. This discovery brought progresses in the supramolecular chemistry. Crown ethers are macrocyclic polyether with repeating (-CH2-CH2-O-) unit. They have peculiar property to bind the cation hence is known as crowns rather than their systematic names. They envelope the guest cation as if it is crown not that cation and hence the name crown ether. Hetro- atom in the ring provides ability to co-ordinate with wide range of cation in empty cavity of molecule. The interests in crown ethers have increased recently owing to their numerous applications. The important application of crown ether is in PTC as anionic catalysts, ion transport mechanism in biological system, host guest chemistry and in solar cell system.

Aprotic, catalyst, cyclic, DBC,hydrophilic

"CROWN ETHERS: SYNTHESIS & APPLICATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.244-253, June 2019, Available :http://www.jetir.org/papers/JETIR1907N71.pdf

"CROWN ETHERS: SYNTHESIS & APPLICATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp244-253, June 2019, Available at : http://www.jetir.org/papers/JETIR1907N71.pdf