Immobilized Rose Bengal as Photocatalyst for Metal‐Free Thiocyanation of Azaheterocycles under Continuous Flow Conditions

Abstract: The immobilization of Rose Bengal onto Merrifield resin and its application in the light‐driven metal‐free thiocyanation of azaheterocycles in continuo were investigated. The supported photocatalyst was used in batch reactions under heterogeneous conditions, with different azaheterocycles, and proved to efficiently promote the reaction. Its recovery and recycle were also demonstrated for up to four times. The resin‐supported Rose Bengal was then employed under continuous flow conditions, affording thiocyanate functionalized azaheterocycles with higher space‐time‐yields than the in‐batch transformations, and in a shorter reaction time. The easily modification of the SCN groups was also demonstrated by synthetizing trifluoromethyl thioethers and sulfenyl tetrazoles derivates in high yields.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Immobilized Rose Bengal as Photocatalyst for Metal‐Free Thiocyanation of Azaheterocycles under Continuous Flow Conditions ; day:04 ; month:10 ; year:2023 ; extent:12
Helvetica chimica acta ; (04.10.2023) (gesamt 12)

Urheber
Colombo, Eleonora
Fiorenza Boselli, Monica
Raimondi, Laura
Puglisi, Alessandra
Rossi, Sergio

DOI
10.1002/hlca.202300132
URN
urn:nbn:de:101:1-2023100515140840475822
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
14.08.2025, 11:01 MESZ

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