54397-36-3

Upstream product

• 31819-37-1 3-bromo-2,5-dimethylthiophene 
• 525-76-8 2-methyl-4-oxo-3,1-benzoxazine 
• 87895-70-3 (2-Azido-phenyl)-(2,5-dimethyl-thiophen-3-yl)-methanone 
• 87895-77-0 3-(2,5-dimethyl-3-thienyl)anthranil 

Relevant academic research and scientific papers

Synthesis of photochromic dithienylethenes having quinoline and Triazolo[4,3-a]quinoline bridges

Convenient synthetic approaches to new photochromic dithienylethenes with quinoline and triazolo[4,3-a]quinoline bridging fragments have been developed.

An In-depth Study of the Azidobenzophenone-Anthranil-Acridone Transformation

The title transformation, particularly the conversion of anthranils into acridones, is shown to be critically sensitive to temperature, solvent, substituent, and metal catalysts.Thus the conversion of 3-(p-tolyl)anthranil into an acridone gives a ratio of 2-and 3-methyl derivatives varying from 0.6:1 to 4.7:1 with changing temperature and solvent.In other similar thermolyses, solvents (e.g. 1,2,4-trichlorobenzene) were incorporated into the product and traces of metals and their derivatives had a dramatic effect on the rate and course of the reaction.The most effective catalysts were iron powder and aluminium acetylacetonate. 3-(2,6-Disubstituted phenyl)anthranils gave acridones in which the substituents were either lost or rearranged onto N or C, the last cases involving sequential -sigmatropic shifts. 3-Thienylanthranils gave related thienoquinolones on thermolysis; again the reaction were very sensitive to catalysis.Blocked thienylanthranils also gave rearrangement products, but the non-aromatic intermediates could be isolated.