Preparation and conformation of dioxocalix[4]arene derivatives

Journal of Organic Chemistry

Volumn 69, Issue 14, 2004, Pages 4774-4780

  Seri, Noa ^a   Thondorf, Iris ^b   Biali, Silvio E ^a  

^a HEBREW UNIVERSITY OF JERUSALEM   (Israel)

^b MARTIN LUTHER UNIVERSITY HALLE WITTENBERG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

CHROMIUM COMPOUNDS; CONFORMATIONS; DERIVATIVES; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; OXIDATION;

ANTI DISPOSITIONS; GEMINAL RINGS; TOPOMERIZATIONS;

AROMATIC COMPOUNDS;

ACETIC ACID ETHYL ESTER; CALIXARENE; CARBENE; CARBONYL DERIVATIVE; CHROMIUM; DIOXOCALIX[4]ARENE DERIVATIVE; METAL OXIDE; TETRAHYDROXYDIOXOCALIX[4]ARENE DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; CALCULATION; CONFORMATION; CRYSTAL STRUCTURE; ISOMERISM; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; OXIDATION; SYNTHESIS;

EID: 3042826692     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo049466g     Document Type: Article

References (25)

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18. Although at present the rigidity of the calix[4]arene tetraacetate derivatives 5 and 6 is unknown, we assume, by analogy with 2, that in these compounds the bulky acetate groups preclude the rotation through the annulus of the rings, allowing the isolation of atropisomers at room temperature in the laboratory.
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25. -1). (Thondorf, I. Unpublished results.)