نتایج جستجو برای: macrocycle and caesium carbonate cs2co3 ________________________________________

تعداد نتایج: 16831944  

Journal: :Molecules 2017
Ana F R Cerqueira Vítor A S Almodôvar Maria G P M S Neves Augusto C Tomé

This review covers the synthesis of coumarin-porphyrin, coumarin-phthalocyanine and coumarin-corrole conjugates and their potential applications. While coumarin-phthalocyanine conjugates were obtained almost exclusively by tetramerization of coumarin-functionalized phthalonitriles, coumarin-porphyrin and coumarin-corrole conjugates were prepared by complementary approaches: (a) direct synthesis...

Journal: :Chemical communications 2004
Elizabeth A Lewis Ross W Boyle Stephen J Archibald

The synthesis, copper(II) complexation and biotin conjugation of a bifunctional chelator incorporating a cross-bridged macrocycle are described.

Journal: :Dalton transactions 2011
Yitong Li Kathleen M Mullen João Sardinha Vítor Félix Paul D Beer

A new [2]rotaxane host system containing nitro-isophthalamide macrocycle and polyether functionalised pyridinium axle components is prepared via clipping and stoppering synthetic methodologies using chloride anion templation. After removing the chloride anion template, (1)H NMR titration experiments reveal the unique interlocked host cavity to be highly selective for binding chloride and bromid...

Journal: :The Journal of organic chemistry 2009
Yuewen Xu Mark D Smith Jeanette A Krause Linda S Shimizu

The intramolecular [2+2] photocyclization of a bis-stilbene macrocycle was studied. The reaction can be controlled by the insertion and removal of urea protecting groups. Upon UV-irradiation in both the solid state and DMSO solution, the free urea macrocycle undergoes a cis-trans photoisomerization that is followed by a [2+2] cycloaddition to afford a single product in high yield. The presence ...

Journal: :Science 2004
Zev J Gartner Brian N Tse Rozalina Grubina Jeffrey B Doyon Thomas M Snyder David R Liu

The translation of nucleic acid libraries into corresponding synthetic compounds would enable selection and amplification principles to be applied to man-made molecules. We used multistep DNA-templated organic synthesis to translate libraries of DNA sequences, each containing three "codons," into libraries of sequence-programmed synthetic small-molecule macrocycles. The resulting DNA-macrocycle...

Journal: :ACS Sustainable Chemistry & Engineering 2022

The possibility to use glycerol carbonate (GlyC) as an innovative alkylating agent for phenolic compounds in solventless conditions and the presence of a catalytic amount both homogeneous heterogeneous bases is herein described. In particular, peculiar, polyfunctional structure GlyC allows one obtain formation not only mono-phenoxy-1,2-propanediol (MPP) analogue but also 1,3-diphenoxy-2-propano...

2014
Andrzej Grzechnik Christopher C. Underwood Joseph W. Kolis

Single-crystals of CsCeF5 were synthesized hydro-thermally. The crystal under investigation was twinned by pseudo-merohedry with a twofold rotation around the c axis as an additional twinning operation. The crystal structure is built of layers of distorted edge- and corner-sharing CeF8 square-anti-prisms. The Cs(+) cations are located between the layers and exhibit coordination numbers of nine....

Journal: :Dalton transactions 2009
Firasat Hussain Bernhard Spingler Franziska Conrad Manfred Speldrich Paul Kögerler Colette Boskovic Greta R Patzke

A family of novel lanthanoid-containing polytungstoarsenate(iii) polyanions with interesting structural features has been isolated: six lacunary {alpha-AsW(9)O(33)} building blocks comprising unusual pyramidal WO(5) units are templated by a caesium cation in a central cavity of the structure.

Journal: :Proceedings of the National Academy of Sciences 1926

Journal: :American Journal of Science 1893

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