Showing papers by "J. Fraser Stoddart published in 1989"
314 citations
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TL;DR: In this paper, the transition metal complexes are included inside the cavities of the CDs both in aqueous solution ( 1 H-m.m.r.data) and in the solid state (X-ray data).
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TL;DR: Proprietes photochimiques et electrochimique du complexe de platine avec les ethers couronnes: 18crown-6, dibenzo 18c Crown 6, -24crown 8, -30 crown-10 and -36 crown-12, and le dinaphto 30crown 10, and avec the cyclophanes decaoxa [13]- meta-and paracyclophanes as mentioned in this paper.
Abstract: Proprietes photochimiques et electrochimiques du complexe de platine avec les ethers couronnes: 18-crown-6, dibenzo 18-crown-6, -24-crown-8, -30 crown-10 et -36 crown-12, et le dinaphto 30-crown-10, et avec les cyclophanes decaoxa [13-13] meta- et paracyclophanes
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TL;DR: The enantiomers of the chiral 2,3-diphenyl- and 2, 3-11,12-tetraphenyl derivatives were obtained in single step reactions from readily available chiral precursors, (RR)- and (SS)-hydrobenzoins, followed by bulk isolations of the pure 18-crown-6 derivatives via their 1:1 crystalline complexes with potassium nitrate or calcium nitrate as mentioned in this paper.
TL;DR: In this article, the first encouraging steps towards the fulfilment of a long-standing research goal aimed at turning the chemistry of laterally fused six-membered rings through 90° were reported.
Abstract: This article relates the first encouraging steps towards the fulfilment of a long-standing research goal aimed at turning the chemistry of laterally-fused six-membered rings through 90° ... or, more specifically, the making of (i) beltenes, in which 1,4-cyclohexadiene rings are linked in a polycyclic array by lateral fusion through their carbon-carbon double bonds, (ii) collarenes, in which alternating benzene and 1,4-cyclohexadiene rings are fused to form macropolycyclic hydrocarbons and (iii) cyclacenes, which may be considered as two annulenes joined to each other by carbon-carbon single bonds between every other atom around the annulene rings. The synthesis of the key macropolycyclic compound, which is a potential precursor of [12]beltene and [12]collarene, exploits the amazing stereoelectronic control that exists in the Diels-Alder reaction between a bisdiene and a bisdienophile with the appropriate structural features and reactivity characteristics.
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01 Sep 1989
TL;DR: The X-ray crystal structure of the hexaoxacyclophane (1), which can be synthesized from 1,3-bis(bromomethyl)benzene and bis(4-hydroxyphenyl) ether in one step, reveals that in the solid state the macrocyclic ring forms a large molecular void potentially capable of binding aromatic guest molecules.
Abstract: The X-ray crystal structure of the hexaoxacyclophane (1), which can be synthesized from 1,3-bis(bromomethyl)benzene and bis(4-hydroxyphenyl) ether in one step, reveals that in the solid state the macrocyclic ring forms a large molecular void potentially capable of binding aromatic guest molecules: the X-ray crystal structure of the 1 : 1 molecular complex formed between (1) and benzene exposes intermolecular and intercomplex aromatic ring interactions of an edge-to-face type.
TL;DR: The polyether-bridged hexaoxacyclophane (3) has been shown by X-ray crystallography to include a CH2Cl2molecule within its molecular cavity as mentioned in this paper.
Abstract: The polyether-bridged hexaoxacyclophane (3) has been shown by X-ray crystallography to include a CH2Cl2molecule within its molecular cavity.