Photo- and ionochromic thienyl(coumarinyl)thiazoles was written by Shepelenko, Evgenii N.;Podshibyakin, Vitaly A.;Tikhomirova, Karina S.;Revinskii, Yurii V.;Dubonosov, Alexander D.;Bren, Vladimir A.;Minkin, Vladimir I.. And the article was included in Journal of Molecular Structure in 2018.Name: 2,5-Dimethylthiophene The following contents are mentioned in the article:
Thienyl (6-methoxycoumarinyl)thiazoles containing various amino groups in bridging fragment were synthesized. In the ring-opened form, the dihetarylethenes display fluorescence with quantum yields of 0.012-0.015. Irradiation of their solutions with light of 365 or 436 nm results in the formation of non-fluorescent ring-closed isomers. Re-opening of the cyclohexadiene ring occurs under exposure to visible light (λ > 500 nm). The prepared compounds represent bifunctional chemosensors – “naked-eye” chromogenic for F– anions (change of the solution color from yellow to brown-red) and fluorogenic for Hg2+ cations (with CHEQ effect). This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Name: 2,5-Dimethylthiophene).
2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Name: 2,5-Dimethylthiophene
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem