Restricted rotation of tert-butyl groups in sterically crowded methylene-functionalized calix[4]arenes

Lev Kuno; Silvio E. Biali

doi:10.1021/ol901472j

Restricted rotation of tert-butyl groups in sterically crowded methylene-functionalized calix[4]arenes

Lev Kuno^*, Silvio E. Biali

^*Corresponding author for this work

Institute of Chemistry

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

19 Scopus citations

Abstract

Image Presented The crowded methylene-functionalized calix[4]arenes 4 and 5 display restricted rotation of the tert-butyl substituents at the bridges. At low temperatures, separate signals were observed for the methyls of these groups in the ¹H NMR spectra.

Original language	English
Pages (from-to)	3662-3665
Number of pages	4
Journal	Organic Letters
Volume	11
Issue number	16
DOIs	https://doi.org/10.1021/ol901472j
State	Published - 20 Aug 2009

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title = "Restricted rotation of tert-butyl groups in sterically crowded methylene-functionalized calix[4]arenes",

abstract = "Image Presented The crowded methylene-functionalized calix[4]arenes 4 and 5 display restricted rotation of the tert-butyl substituents at the bridges. At low temperatures, separate signals were observed for the methyls of these groups in the 1H NMR spectra.",

author = "Lev Kuno and Biali, {Silvio E.}",

year = "2009",

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T1 - Restricted rotation of tert-butyl groups in sterically crowded methylene-functionalized calix[4]arenes

AU - Kuno, Lev

AU - Biali, Silvio E.

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Y1 - 2009/8/20

N2 - Image Presented The crowded methylene-functionalized calix[4]arenes 4 and 5 display restricted rotation of the tert-butyl substituents at the bridges. At low temperatures, separate signals were observed for the methyls of these groups in the 1H NMR spectra.

AB - Image Presented The crowded methylene-functionalized calix[4]arenes 4 and 5 display restricted rotation of the tert-butyl substituents at the bridges. At low temperatures, separate signals were observed for the methyls of these groups in the 1H NMR spectra.

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JO - Organic Letters

JF - Organic Letters

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Restricted rotation of tert-butyl groups in sterically crowded methylene-functionalized calix[4]arenes

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