Study on Bis Crown Ethers (Ⅶ)—The Syntheses of the Schiff Base Type and Secondary Amine Type Bis (Benzo-18-Crown-6)

Abstract

Abstract: Six new Schiff base type mono- and bis- crown ethers were prepared by condensing 4’-amino benzo-18-crown-6 with m-nitrobenzaldehyde, p-nitrobenzaldehyde, isophthalic aldehyde, substituted isophthalic aldehydes and terephthalic aldehyde respectively.Schiff base type bis- crown ethers were also prepared by the reaction of 4’ - formyl benzo-18-crown-6 with 4’-amino benzo-15-crown-5 and 4’-amino benzo-18-crown-6. Secondary amine type bis crown ethers were obtained by the reduction of the Schiff bases with sodium borohydride.

Key words: Bis crown ethers, Schiff base, Substituted benzo-18-crown-6

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Wang Defen, Wang Dengjin, Hu Hongwen . Study on Bis Crown Ethers (Ⅶ)—The Syntheses of the Schiff Base Type and Secondary Amine Type Bis (Benzo-18-Crown-6)[J]. Chem. J. Chinese Universities, 1990, 11(3): 266.

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Study on Bis Crown Ethers (Ⅶ)—The Syntheses of the Schiff Base Type and Secondary Amine Type Bis (Benzo-18-Crown-6)

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