Synthesis

General synthetic method for naphthyridines and their N-oxides containing isoquinolinic nitrogen

A Numata, Y Kondo, T Sakamoto

Index: Numata, Atsushi; Kondo, Yoshinori; Sakamoto, Takao Synthesis, 1999 , # 2 p. 306 - 311

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Citation Number: 72

Abstract

Abstract: Substituted naphthyridines containing isoquinolinic nitrogen were synthesized by the reaction of o-ethynylpyridinecarbaldehydes with ammonia. The synthesis of their N- oxides was also achieved by a basic cyclization reaction of the same pyridine derivatives via the corresponding oximes. Key words: naphthyridines, N-oxides, cyclization, palladium- catalyzed acetylene cross-coupling, lithiation

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