Absorption spectra of isomeric methyl- and phenylthiazoles and their simple and quaternary salts was written by Kornilov, M. Yu.;Aych, E. D.;Smeshko, L. I.. And the article was included in Ukrainskii Khimicheskii Zhurnal (Russian Edition) in 1973.Recommanded Product: 5-Phenylthiazole This article mentions the following:
The π-π* absorption maximum for the 2-, 4-, and 5-Me and the 2-, 4-, and 5-phenylthiazoles, their HCl salts, and the N-Me quaternary salts was determined Formation of the salt resulted in a 6-7 nm bathochromic shift for each of the methylthiazoles. The bathochromic shift was larger for 5-phenylthiazole and the quaternary salt of 4-phenylthiazole. The shifts were hypsochromic with 2-phenylthiazole. These changes are discussed in terms of steric hindrance and resonance. In the experiment, the researchers used many compounds, for example, 5-Phenylthiazole (cas: 1826-13-7Recommanded Product: 5-Phenylthiazole).
5-Phenylthiazole (cas: 1826-13-7) belongs to thiazole derivatives. Thiazoles frequently appear in peptide studies. Thiazoles can also be used as protected formyl groups, which can be released in later stages of complex natural product synthesis. Thiazole sulfonation occurs only under forcing conditions: the action of oleum at 250 °C for 3 hours in the presence of mercury(II) sulfate leads to 65% formation of 5-thiazole sulfonic acid.Recommanded Product: 5-Phenylthiazole
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica