Novel dimeric leuco-TAM dyes, 1,4-bis{(1E,3Z)-1,3-bis(1,3,3-trimethylindolin-2-ylidene)propan-2-yl}benzene derivatives: Structure and spectroscopic characterization was written by Keum, Sam-Rok;Ma, So-Young;Kim, Do-Kyung;Lim, Hyun-Woo;Roh, Se-Jung. And the article was included in Journal of Molecular Structure in 2012.Product Details of 6872-17-9 This article mentions the following:
Novel dimeric leuco-triarylmethane (LTAM) dyes, 1,4-bis{(1E,3Z)-1,3-bis(1,3,3-trimethylindolin-2-ylidene)propan-2-yl}benzene derivatives, as precursors of dimeric TAM+ and TAM++ dyes, were synthesized and characterized by 1D and 2D NMR experiments including DEPT, COSY, HSQC, HMBC and NOESY. Judging from the 1H NMR anal., the dimeric LTAM mols. were suggested to have a dual-propeller shaped structure. For the prepared dimeric leuco-TAM dyes, the ZE/EZ isomers were formed as the sole products from the reaction of 2-3 M excess Fischer base and terephthalaldehyde in absolute ethanol. The ZE/EZ isomers were equilibrated with other diastereomers (EE/EE and ZZ/ZZ) in organic solvents. UV-Vis spectroscopy of dimeric TAM++ dyes in organic solvents show an absorption band at >700 nm in the near-IR (NIR) region. Formation of the dimeric TAM++ mols. was further confirmed by comparison of CV diagrams for monomeric TAM+ and dimeric TAM++ mols. In the experiment, the researchers used many compounds, for example, 5-Chloro-1,3,3-trimethyl-2-methyleneindoline (cas: 6872-17-9Product Details of 6872-17-9).
5-Chloro-1,3,3-trimethyl-2-methyleneindoline (cas: 6872-17-9) belongs to indole derivatives. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter.Indole was synthesized in moderate yield via an o-naphthoquinone catalyzed tandem cross-coupling of substituted aniline and benzylamine under aerobic oxidation conditions.Product Details of 6872-17-9
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Indole alkaloid derivatives as building blocks of natural products from聽Bacillus thuringiensis聽and聽Bacillus velezensis聽and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles