1140788-75-5Relevant academic research and scientific papers
Montmorillonite K-10 catalyzed, microwave-assisted cyclization of acetylenic amines: An efficient synthesis of pyrrolocoumarins and pyrroloquinolones
Majumdar,Ponra, Sudipta,Ghosh, Tapas
supporting information; experimental part, p. 2079 - 2083 (2012/08/07)
A microwave-assisted montmorillonite K-10 catalyzed synthesis of pyrrolocoumarins and pyrroloquinolones from acetylenic amine is described. The reaction utilizes montmorillonite K-10 as an inexpensive, recyclable, and environmentally benign acid catalyst. Reactions were completed in few minutes under microwave irradiation and provided excellent yields. The efficient and eco-friendly catalyst and the convenience of the product isolation make the process an attractive alternative for the synthesis of these important heterocycles. Georg Thieme Verlag Stuttgart ? New York.
An efficient synthesis of pyrrolocoumarins and pyrroloquinolones by acid-catalysed cyclisation of acetylenic amines in water
Majumdar,Ponra, Sudipta,Hazra, Somjit,Roy
experimental part, p. 1489 - 1493 (2011/05/30)
A simple H+-catalysed cyclisation of acetylenic amines for the synthesis of pyrrolocoumarins and pyrroloquinolones under conventional heating or microwave irradiation has been achieved. The reaction requires inexpensive catalyst and simple yet clean reaction conditions and offers potentially bioactive heterocycles in 82-95% yields. Georg Thieme Verlag Stuttgart New York.
Iron/palladium-catalyzed intramolecular hydroamination: An expedient synthesis of pyrrole-annulated coumarin and quinolone derivatives
Majumdar,De, Nirupam,Roy
experimental part, p. 4207 - 4212 (2011/02/22)
A highly efficient intramolecular hydroamination reaction of heterocycle-centered aminoalkynes using both substituted and free amines catalyzed by PdCl2/FeCl3 catalytic system to form the biologically important pyrrolocoumarin and py
A short route to the synthesis of pyrrolocoumarin and pyrroloquinolone derivatives by sonogashira cross-coupling and gold-catalyzed cycloisomerization of acetylenic amines
Majumdar, Krishna C.,Chattopadhyay, Buddhadeb,Samanta, Srikanta
experimental part, p. 311 - 317 (2009/06/24)
The syntheses of pyrrolocoumarin and pyrroloquinolone derivatives have been achieved in excellent yields from the acetylenic amines by gold-catalyzed cycloisomerization in the absence of any silver salts or any other bases. The acetylenic amines were in t
