Mannich andO-Alkylation Reactions of Tetraalkoxyresorcin[4]arenes – The Use of Some Products in Ligand-Assisted Reactions
作者:Benjamin R. Buckley、Jonathan Y. Boxhall、Philip C. Bulman Page、Yohan Chan、Mark R. J. Elsegood、Harry Heaney、Kathryn E. Holmes、Matthew J. McIldowie、Vickie McKee、Matthew J. McGrath、Mauro Mocerino、Andrew M. Poulton、Edward P. Sampler、Brian W. Skelton、Allan H. White
DOI:10.1002/ejoc.200600590
日期:2006.11
microwave-assisted aprotic reaction conditions and the use of preformed iminium ion intermediates. When the reactions were carried out with the use of chiral bis(aminol) ethers, mixtures of diastereomers were obtained that could be separated by flash chromatography. The absolute configurations of the enantiomerically pure tetrabenzoxazine derivatives were established in some cases by X-ray crystallographic
The Preparation and Absolute Configurations of Enantiomerically PureC4-Symmetric Tetraalkoxyresorcin[4]arenes Obtained from Camphorsulfonate Derivatives
作者:Benjamin R. Buckley、Philip C. Bulman Page、Yohan Chan、Harry Heaney、Michael Klaes、Matthew J. McIldowie、Vickie McKee、Jochen Mattay、Mauro Mocerino、Eduardo Moreno、Brian W. Skelton、Allan H. White
DOI:10.1002/ejoc.200600591
日期:2006.11
Hydrolytic removal of the camphorsulfonyl residue(s) from the various diastereoisomers gave enantiomers of known absolute configurations. In some cases, the chiral nonracemic tetraalkoxyresorcin[4]arenes were converted into known tetrabenzoxazine derivatives by using N,N-bis(methoxymethyl)[(S)-(-)-(a-methylbenzyl)]amine in thermal or microwave - assisted reactions. (c) Wiley-VCH Verlag GmbH & Co. KGaA
Partial functionalisation of <i>C</i><sub>4</sub>-symmetric tetramethoxyresorcinarenes
作者:Daniel A. Tan、Chiara Massera、Mauro Mocerino
DOI:10.1080/10610278.2019.1620949
日期:2019.7.3
partially silylated derivatives, with the targeted distally silylated resorcinarene being obtained in a yield of 31%. These partially silylated derivatives would serve as versatile intermediates for the selective functionalisation of this elegant architecture. The solid-state structures of many of these derivatives have been determined by singlecrystalX-ray crystallography. Graphical abstract
摘要 对外消旋 C4 对称四甲氧基间苯二酚的酚类的远端官能化的研究导致了一种简单的单步程序,该程序允许分离克数量的部分硅烷化衍生物,目标远端硅烷化间苯二酚的产量为31%。这些部分硅烷化的衍生物将作为多功能中间体,用于这种优雅结构的选择性功能化。许多这些衍生物的固态结构已通过单晶 X 射线晶体学确定。图形概要
Facile Lewis Acid Catalyzed Synthesis of <i>C</i><sub>4</sub> Symmetric Resorcinarenes
作者:Matthew J. McIldowie、Mauro Mocerino、Brian W. Skelton、Allan H. White
DOI:10.1021/ol006608u
日期:2000.11.1
GraphicsThe Lewis acid catalyzed condensation of 3-methoxyphenol with octanal produced the C-4 symmetric calix[4]resorcinarene 2, in high yield. Of the numerous stereo- and regioisomers possible, the rccc isomer with C-4 symmetry was the only product isolated (as a racemate). The structure has been established by single-crystal X-ray structure analysis.
Expanding the Family of Fluorescent Coumarin[4]arenes: Improved Synthesis, π-Extension, and Characterization
作者:Pawan Kumar、Parthasarathy Venkatakrishnan
DOI:10.1002/ejoc.201901189
日期:2019.12.31
Conformationally flexible fluorescent C‐alkyl coumarin[4]arenes as well as their π‐extended derivatives were synthesized in good to excellent yields using a well‐optimized method and their visible emission was investigated.