180689-19-4

Upstream product

• 110-89-4 piperidine 
• 129995-13-7 1-amino-2-benzoylethynyl-9,10-anthraquinone 
• 426816-33-3 1-amino-2-(3-hydroxy-3-phenylprop-1-ynyl)-9,10-anthraquinone 
• 4187-87-5 1-Phenyl-2-propyn-1-ol 
• 81050-51-3 1-amino-2-iodo-9,10-anthraquinone 
• 98-88-4 benzoyl chloride 
• 112878-74-7 1-amino-2-ethynyl-9,10-anthraquinone 

Downstream Products

• 157439-79-7 2-phenyl-4-(piperidyl-1)-anthra[1,2-b]pyridine-7,12-dione 

Relevant academic research and scientific papers

Transformations of 1-amino-2-(3-hydroxyalk-1-ynyl)-9,10-anthraquinones in the presence of amines

When heated in piperidine, 1-amino-2-(3-hydroxyalk-1-ynyl)-9,10-anthraquinones undergo cyclization into 2-(1-hydroxyalkyl)naphtho[2,3-g]indole-6,11-diones. In contrast, 1-amino-2-(3-hydroxy-3-phenylpropynyl)-9,10-anthraquinone reacts with primary and secondary amines to give the corresponding 1-amino-2-(1-amino-2-benzoylvinyl)-9,10-anthraquinones, which undergo cyclization into 4-dialkylamino-or 4-alkylamino-2-phenylnaphtho[2,3-h]quinoline-7,12-diones. Heating of the starting phenylpropynol with Et3N causes its dehydrogenation and isomerization.

The cyclization of vicinal 1-amino-2-acylvinylated derivatives of aromatic amines

A general method for the synthesis of substituted fused polycyclic compounds containing a 4-slkylsmino- or 4-dialkylaminopyridine cycle has been proposed.The method includes the addition of primary or secondary amines to vicinal (acylethynyl)arylamines fo