Monday , 3 August 2020

Tag Archives: Aldehydes

Samarium triflet: Sm(OTf)3 a simple and efficient catalyst for the synthesis of 1,4-dihydropyridine (Hantzsch pyridines)

M. Venkanna, Dr. B. Sammaiah, K. Srinuvasulu, Prof. R. Madhusudhan Raju* Department of Chemistry, Osmania University, Hyderabad-07, Telangana A B S T R A C T 1,4-Dihydropyridine  synthesis  has  been  carried  out  using  Samarium  triflet, as a catalyst. This  protocol  is  applicable  to  a variety  of  aldehydes with β-ketoester  and  ammonium  acetate  to  afford  the  corresponding  Hantzsch pyridines  in  excellent  ... Read More »

Sodium hypophosphite catalyzed synthesis of bis (indolyl) methanes in aqueous medium

Rasokkiyam Elayarajaa,b and R. Joel Karunakaranb*  aResearch and Development Centre, Orchid Chemicals and Pharmaceuticals Ltd., Shozhanganallur, Chennai-600119. India. bDepartment of Chemistry, Madras Christian College, Tambaram, Chennai-600059, India. A B S T R A C T A mild method of sodium hypophosphite catalyzed synthesis of bis(indolyl)methanes has been described. This electrophilic bisubstitution reaction between indole and aldehyde were carried out in ... Read More »

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