Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume -, Issue -, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202302374
Keywords
annulation reaction; dithienylethenes; phosphines; photochromism; siloles
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A methodological approach for the preparation of unconventional DTE-based photochromic phosphines is reported in this study, and the influence of different linkers on the photochromism and phosphinyl group basicity is studied and evaluated.
The synthesis of phosphines with light controlled basicity is presented in this study. A methodological approach for the preparation of these unconventional photochromic phosphines based on a dithienylethene organic moiety is reported. It relies on the palladium-catalyzed annulation of alkynyl phosphines in the presence of a 2,3-Dithienylsilacyclopropene. Accordingly, a diphenyphosphino moiety is connected to the organic photochrome thanks to different linkers. Their influence on the photochromism and on the phosphinyl group basicity is studied and evaluated based on experimental an NMR descriptor as well as DFT calculations. A methodological approach for the preparation of unconventional DTE-based photochromic phosphines is reported. It relies on the Pd-catalyzed annulation reaction of alkynyl phosphines in the presence of a silirene.image
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