Crystal and solution structures of 25,27-diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene

Peter J. Duggan; Sarah L. Sheahan; Melanie L. Szydzik

doi:10.1016/S0040-4039(00)00322-1

Crystal and solution structures of 25,27-diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene

Peter J. Duggan, Sarah L. Sheahan, Melanie L. Szydzik

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

6 Citations (Scopus)

Abstract

The crystal and solution structures of diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene (2) have been determined. This diester (2) adopts the less common partial cone conformation in the solid state, but in solution, 2 is fluxional at room temperature. Variable temperature ¹H NMR spectroscopy shows that at 250 K in CDCl₃, 2 exists in a cone and a partial cone in a ratio of 43:57. (C) 2000 Elsevier Science Ltd.

Original language	English
Pages (from-to)	3165-3168
Number of pages	4
Journal	Tetrahedron Letters
Volume	41
Issue number	17
DOIs	https://doi.org/10.1016/S0040-4039(00)00322-1
Publication status	Published - 22 Apr 2000
Externally published	Yes

Keywords

Calixarenes
Conformation
NMR
X-ray crystal structure

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title = "Crystal and solution structures of 25,27-diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene",

abstract = "The crystal and solution structures of diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene (2) have been determined. This diester (2) adopts the less common partial cone conformation in the solid state, but in solution, 2 is fluxional at room temperature. Variable temperature 1H NMR spectroscopy shows that at 250 K in CDCl3, 2 exists in a cone and a partial cone in a ratio of 43:57. (C) 2000 Elsevier Science Ltd.",

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T1 - Crystal and solution structures of 25,27-diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene

AU - Duggan, Peter J.

AU - Sheahan, Sarah L.

AU - Szydzik, Melanie L.

PY - 2000/4/22

Y1 - 2000/4/22

N2 - The crystal and solution structures of diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene (2) have been determined. This diester (2) adopts the less common partial cone conformation in the solid state, but in solution, 2 is fluxional at room temperature. Variable temperature 1H NMR spectroscopy shows that at 250 K in CDCl3, 2 exists in a cone and a partial cone in a ratio of 43:57. (C) 2000 Elsevier Science Ltd.

AB - The crystal and solution structures of diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene (2) have been determined. This diester (2) adopts the less common partial cone conformation in the solid state, but in solution, 2 is fluxional at room temperature. Variable temperature 1H NMR spectroscopy shows that at 250 K in CDCl3, 2 exists in a cone and a partial cone in a ratio of 43:57. (C) 2000 Elsevier Science Ltd.

KW - Calixarenes

KW - Conformation

KW - NMR

KW - X-ray crystal structure

UR - http://www.scopus.com/inward/record.url?scp=0034701519&partnerID=8YFLogxK

U2 - 10.1016/S0040-4039(00)00322-1

DO - 10.1016/S0040-4039(00)00322-1

M3 - Article

AN - SCOPUS:0034701519

SN - 0040-4039

VL - 41

SP - 3165

EP - 3168

JO - Tetrahedron Letters

JF - Tetrahedron Letters

IS - 17

ER -

Crystal and solution structures of 25,27-diethoxycarbonylmethoxy-26,28- dimethoxy-t-butylcalix[4]arene

Abstract

Keywords

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