50509-13-2

Upstream product

• 40018-25-5 2-Chlorobenzoyl acetonitrile 
• 590-86-3 isovaleraldehyde 

Downstream Products

• 33671-44-2 5-(2-chlorophenyl)-7-isopropyl-1,3-dihydro-2H-thieno[2,3-e][1,4]diazepin-2-one 

Relevant academic research and scientific papers

Imidazole[4,5-e]thieno[2,3-b]pyridine derivatives having solid-liquid dual-fluorescence function and preparation method of imidazole[4,5-e]thieno[2,3-b]pyridine derivatives

The invention discloses imidazole[4,5-e]thieno[2,3-b]pyridine derivatives having a structure shown as a formula (I) in the description as well as a preparation method and an application of the imidazole[4,5-e]thieno[2,3-b]pyridine derivatives. In the formula, R is selected from 2-hydroxy, 2-hydroxy-6-fluoro, 2-hydroxy-5-formyl, 2-hydroxy-4-bromo, 2-hydroxy-4-cyano, 2-hydroxy-4-methyl, 2-hydroxy-4-nitro, 2-hydroxy-5-methyl, 2-hydroxy-5-nitro, 2-methylsulfonamido, 2-p-toluenesulfonylamino, 2-p-toluenesulfonylamino-6-fluoro, 2-hydroxy-4-trifluoromethyl and 2-hydroxy-4-phenylethynyl.

An arch-bridge-type fluorophore for bridging the gap between aggregation-caused quenching (ACQ) and aggregation-induced emission (AIE)

Solution and solid dual photoluminescence (PL) molecules fill the substantial gap between ACQ and AIE molecules to explore the mechanism of molecular luminescence in greater detail and to facilitate practical applications. A unique arch-bridge-like thiazolo[5,4-b]thieno[3,2-e]pyridine moiety is obtained as a stator after the rigidification of rotor 1 by intramolecular H-bonding of ortho -OH or -NH2 to afford two classes of solid and solution dual PL molecules. As a typical example, DF5 is dual PL active. Moreover, the large Stokes shift with high dual PL efficiency (ΦF up to 51% in the solid state, 80% in DMF, 74% in DMSO, and 100% in water), together with the good thermal stability (Tm > 200 °C and T05 > 200 °C), make it more practical for promising optoelectronic and biological applications.

Thiazole with fluorescent function [4,5-e] thiophene [2,3-b] pyridine derivative and its preparation method (by machine translation)

This invention has offered a kind of formula (I) thiazole shown in [4,5? E] thiophene [2,3? B] pyridine compound, its as a fluorescent compound of the function of the application, and provides its preparation method: Wherein R is selected from hydrogen, chloro, fluoro; R ' is selected from 4? Hydroxy; 2? Hydroxy; 2? Methyl; 2,6? Dimethoxy; 2? Hydroxy? 5? Iodo; 2? Hydroxy? 5? Polybromide; 2? Hydroxy? 3,5? Tert-butylphenol; 2? Hydroxy? 4? Cyano; 2? Hydroxy? 4? Methoxy; 2? Hydroxy? 5? Sulfo; 2? Amino; 2? A sulfonamide group; 2? The methyl sulfonamide group; 2? Ester benzosulfonate; 2? (Naphtalenes? 2? Sulfonamide-based); 4? Benzenesulfonyl. (by machine translation)

A novel way to tricyclic heteroaromatics; Thiazolo[5,4- b ]thieno[3,2- e ]pyridine derivatives

Thiazolo[5,4-b]thieno[3,2-e]pyridine derivatives, novel tricyclic heteroaromatics, have been designed and synthesized by a one-pot reaction of diazepinethiones and aldehydes. This reaction is based on a novel rearrangement reaction of seven-membered 1,4-diazepine-2-thiones to six-membered 3-aminopyridine-2-thiols catalyzed by scandium(III) triflate. Georg Thieme Verlag Stuttgart. New York.