An Expedient Synthesis of Ketocalix[6]arene Hexamethyl Ether

Norbert Itzhak; Silvio E. Biali

doi:10.1055/s-0037-1609574

An Expedient Synthesis of Ketocalix[6]arene Hexamethyl Ether

Norbert Itzhak, Silvio E. Biali^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

p - tert -Butylcalix[6]arene hexamethyl ether was oxidized in one step to the corresponding ketocalix[6]arene via photochemical bromination (100 W spot lamp) with NBS in a chloroform/water mixture. A pentamethyl ketocalix[6]arene derivative was obtained by reaction of the ketocalix[6]arene hexamethyl ether with boron tribromide dimethyl sulfide complex, and characterized by X-ray crystallography. In the presence of base, the compound undergoes an intramolecular nucleophilic aromatic substitution reaction.

Original language	English
Pages (from-to)	3897-3901
Number of pages	5
Journal	Synthesis (Germany)
Volume	50
Issue number	19
DOIs	https://doi.org/10.1055/s-0037-1609574
State	Published - 5 Jul 2018

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© 2018 Georg Thieme Verlag. All rights reserved.

Keywords

bromine
calixarenes
cleavage
ether
oxidation
phenols

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abstract = "p - tert -Butylcalix[6]arene hexamethyl ether was oxidized in one step to the corresponding ketocalix[6]arene via photochemical bromination (100 W spot lamp) with NBS in a chloroform/water mixture. A pentamethyl ketocalix[6]arene derivative was obtained by reaction of the ketocalix[6]arene hexamethyl ether with boron tribromide dimethyl sulfide complex, and characterized by X-ray crystallography. In the presence of base, the compound undergoes an intramolecular nucleophilic aromatic substitution reaction.",

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AU - Biali, Silvio E.

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N2 - p - tert -Butylcalix[6]arene hexamethyl ether was oxidized in one step to the corresponding ketocalix[6]arene via photochemical bromination (100 W spot lamp) with NBS in a chloroform/water mixture. A pentamethyl ketocalix[6]arene derivative was obtained by reaction of the ketocalix[6]arene hexamethyl ether with boron tribromide dimethyl sulfide complex, and characterized by X-ray crystallography. In the presence of base, the compound undergoes an intramolecular nucleophilic aromatic substitution reaction.

AB - p - tert -Butylcalix[6]arene hexamethyl ether was oxidized in one step to the corresponding ketocalix[6]arene via photochemical bromination (100 W spot lamp) with NBS in a chloroform/water mixture. A pentamethyl ketocalix[6]arene derivative was obtained by reaction of the ketocalix[6]arene hexamethyl ether with boron tribromide dimethyl sulfide complex, and characterized by X-ray crystallography. In the presence of base, the compound undergoes an intramolecular nucleophilic aromatic substitution reaction.

KW - bromine

KW - calixarenes

KW - cleavage

KW - ether

KW - oxidation

KW - phenols

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JO - Synthesis (Germany)

JF - Synthesis (Germany)

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An Expedient Synthesis of Ketocalix[6]arene Hexamethyl Ether

Abstract

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Keywords

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