Photochromism change by conformation control in macrocyclic boronic ester cavity
نویسندگان
چکیده
منابع مشابه
Boronic acid and boronic ester containing polyoxometalates.
Three organoboron functionalized polyoxometalates have been synthesized using Schiff base chemistry including a boronic acid, its methyl ester and its trimethylene glycol ester. The compounds have been characterized in the solid state by single crystal diffraction (XRD), FT-IR and elemental analysis and in solution using 1H NMR spectroscopy.
متن کاملChemoselective Boronic Ester Synthesis by Controlled Speciation**
Control of boronic acid solution speciation is presented as a new strategy for the chemoselective synthesis of boronic esters. Manipulation of the solution equilibria within a cross-coupling milieu enables the formal homologation of aryl and alkenyl boronic acid pinacol esters. The generation of a new, reactive boronic ester in the presence of an active palladium catalyst also facilitates strea...
متن کاملAnalytical and separation chemistry by taking advantage of organic photochromism combined with macrocyclic chemistry.
Photochromic crown compounds, such as monomeric and polymeric crown compounds incorporating spirobenzopyran, spironaphthooxazine, spirobenzothiapyran, Malachite Green, and Crystal Violet moieties, were synthesized for applications in the fields of analytical and separation chemistry. The photochromic crown compounds, especially crowned spirobenzopyran derivatives, were applied to metal ion extr...
متن کاملAn alkynylboronic ester cycloaddition route to functionalised aromatic boronic esters.
A series of functionalised aromatic boronic esters have been prepared via the regioselective cycloaddition of 2-pyrones with alkynylboronates.
متن کاملMacrocyclic aromatic tetrasulfonamides with a stable cone conformation.
Aromatic tetrasulfonamide macrocycles carrying alkoxy side chains adopt a stable cone conformation in both the solid state and solution.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations and Advances
سال: 2014
ISSN: 2053-2733
DOI: 10.1107/s2053273314093450