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Article Dans Une Revue Angewandte Chemie International Edition Année : 2021

Dithienylethene Based Photochromic Siloles: a Straightforward and Divergent Synthetic Strategy

Résumé

A straightforward synthetic methodology for the preparation of photochromic siloles based on the dithienylethene motif is developed. It relies upon an efficient palladium-catalyzed annulation reaction of a 2,3-bis(3-thienyl)-silirene with terminal alkynes in mild conditions. The reaction is functional group-tolerant and can be performed in high yields with a variety of functional terminal alkynes. It can even be extended to a polymeric polypropargylmethacrylamide ( PPMA ) substrate affording the corresponding photochromic polymer with different degree of photochromic unit incorporation by simply adjusting the polymer / silirene stoichiometric ratio.

Domaines

Chimie
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Dates et versions

hal-03194306 , version 1 (23-04-2021)

Identifiants

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Marc Devillard, Nour Nour Eddine, Marie Cordier, Gilles Alcaraz. Dithienylethene Based Photochromic Siloles: a Straightforward and Divergent Synthetic Strategy. Angewandte Chemie International Edition, 2021, 60 (22), pp.12356-12359. ⟨10.1002/anie.202102540⟩. ⟨hal-03194306⟩
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