129190-53-0

Upstream product

• 129190-52-9 2-(phenylethynyl)phenyl 3,5-diphenyl-as-triazine-6-carboxylate 
• 3885-45-8 ethyl 2,3-dioxo-3-phenylpropanoate 
• 28819-30-9 benzamidrazone 
• 92151-73-0 2-phenylethynylphenol 
• 125345-29-1 1-(2-phenylethynyl)-2-(methoxymethoxy)benzene 
• 129190-49-4 3,5-diphenyl-as-triazine-6-carboxylic acid 
• 501-65-5 diphenyl acetylene 
• 536-74-3 phenylacetylene 
• 94617-56-8 ethyl 3,5-diphenyl-1,2,4-triazine-6-carboxylate 

Relevant academic research and scientific papers

Synthesis of Chromeno[3,4-c]pyridines by Rhodium(III)-Catalyzed Annulation of Coumarinyl Ketoxime Esters and Alkynes

An efficient, scalable synthetic method of chromeno[3,4-c]pyridine scaffolds through redox-neutral [4 + 2] annulation between coumarinyl ketoxime esters and internal alkynes has been developed using the rhodium(III) catalytic system. The present transform

Method for synthesizing pyrido[3,4-c]coumarin

The invention discloses a method for synthesizing pyrido[3,4-c]coumarin. (E)-3-(1-(acetoxyimino)-2-substituted ethyl)coumarins and alkynes are reacted in an organic solvent at a certain temperature for several hours under the catalysis of a metal catalyst system to obtain the target compound. The method overcomes the disadvantages of difficulty in obtaining substrates, harsh reaction conditions (high temperature and long time), strong acids, tedious steps, low yield, and inability to prepare multi-carbon substituted pyridine ring targets in the prior art. The synthesis method disclosed plays a great role in the research field of pyridocoumarin derivatives.

STUDIES ON as-TRIAZINE DERIVATIVES. XV. INTRAMOLECULAR REVERSE-ELECTRON DEMAND DIELS-ALDER REACTION OF 1,2,4-TRIAZINE DERIVATIVES

5,6-Diphenyl-1,2,4-triazine-3-carboxylic acid esters which have acetylenic function in the alcoholic moiety of the ester group were converted to the pyridine derivatives condensed with lactone ring by means of intramolecular reverse electron-demand Diels-