Polymerization of a Photochromic Diarylethene by Friedel-Crafts Alkylation was written by Jeong, Yong-Chul;Park, Dae Gyu;Kim, Eunkyoung;Yang, Sung Ik;Ahn, Kwang-Hyun. And the article was included in Macromolecules in 2006.Safety of 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:
A high-d. diarylethene main-chain homopolymer, poly-BTF6, from the reaction of BTF6 with TiCl4 and chloromethyl Me ether was synthesized and characterized. The new polymerization method is efficient to produce the polymers of various mol. weights in high yield. The polymer exhibits the characteristic photochromic property as the corresponding monomeric unit in solution and also in solid film. The fatigue resistance of the polymer to UV light was significantly improved compared with its monomer unit. This novel polymerization of a photochromic diarylethene using Friedel-Crafts alkylation could be widely applied in the polymerization of many functional aromatic compound as evidently shown by the dimerization of a benzothiopene derivative In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Safety of 3-Bromo-2-methylbenzo[b]thiophene).
3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Safety of 3-Bromo-2-methylbenzo[b]thiophene
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem