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Hargrave, Tetrahedron, 45, 4327 (1989).

Synthesis and Chemistry of a Strained Cyclic Ynamide

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A simple and effective method for the synthesis of bioactive imidazo[1,2,4]triazole analogues has been developed utilizing the MCR technique, which involved the reaction of aminotriazoles, isocyanides and aldehydes. The products were characterized by 1H, 13C NMR spectroscopy, MS and elemental analysis. Interestingly, compounds 19d, 21a, 21b and 21h displayed good cytotoxic activities at 10−4 M concentration in the inhibition of tumor cell growth as evaluated by the MTT method.

Synthesis of Novel Imidazo[1,2- a ]pyridines with …

A highly efficient synthesis of 3-formyl imidazo[1,2-]pyridine and imidazo[1,2-]pyrimidine, under Cu-catalyzed aerobic oxidative conditions and by utilizing ethyl tertiary amines as carbon sources, is disclosed. A novel activation mode of ethyl tertiary amines in which simultaneous selective cleavage of C–C bond and C–N bond of ethyl group with molecular oxygen as terminal oxidant in this one-pot protocol is reported for the first time. This reaction features broad substrate scope, good functional group tolerance, as well as diversified and valuable products.

A copper/iodine cocatalyzed decarboxylative cyclization of α-amino acids is described. Starting from the readily available amino acids and either 2-benzoylpyridines or 2-benzoylquinolines, 1,3-disubstituted imidazo[1,5-]pyridines and 1,3-disubstituted imidazo[1,5-]quinolines were prepared in excellent yields.

Synthesis of imidazo[1,2- a ]pyridines - Organic …

Synthesis of a novel imidazopyridine with potent activity against herpes simplex viruses is presented. Several synthetic approaches that describe the introduction of a C-3 pyrimidine substituent on the imidazopyridine core via construction of the pyrimidine or Stille coupling are outlined. Methodology for efficient installation of C-8 amine substituents was developed. The outlined strategies provide a high-yielding, scalable route that is amenable to rapid analogue synthesis.

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    been made on the synthesis of imidazo[1,2-a]pyridine deriva-tives,7 making a wide range of drugs, including alpidem,

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