Tetrahedron Letters

Efficient synthesis of indolizines and new imidazo [1, 2-a] pyridines via the expected cyclization of aromatic cycloimmonium ylides with electron deficient alkynes and …

C Sandeep, B Padmashali, RS Kulkarni

Index: Sandeep; Padmashali, Basavaraj; Kulkarni, Rashmi S. Tetrahedron Letters, 2013 , vol. 54, # 48 p. 6411 - 6414

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Citation Number: 6

Abstract

Abstract Aromatic cycloimmonium ylides underwent smooth cyclization with electron deficient alkynes in presence of anhydrous K 2 CO 3 in DMF solvent at room temperature to afford substituted indolizines. Ylides have also undergone expected cyclization with ethyl cyanoformate to produce imidazo [1, 2-a] pyridines. The structures of these newly synthesized compounds have been confirmed by spectroscopic techniques and X-ray ...