Preparation of New Nitrogen-Bridged Heterocycles. XIV. Further Investigation of the Desulfurization and the Rearrangement of Pyrido[1,2-d]-1,3,4-thiadiazine Intermediates(Organic,Chemical)

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概要

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• The formation of pyrazolo[1,5-α]pyridine derivatives via the desulfurization and the rearrangement of pyrido[1,2-d]-1,3,4-thiadiazine intermediates having various substituents at the 2-and 4-positions was investigated, and the wide applicability of this approach to the syntheses of pyrazolo[1,5-α]pyridines was established. The substituent effect in these reactions was also clarified. The possibility of the extension of this reaction to other heterocyclic systems such as pyrido[1,2-b]-pyridazine and pyrido[2,1-f]-1,2,4-triazine was examined, but only pyridinium 1-aminide and 1,2,4-triazolo[1,5-α]pyridine were obtained instead of the expected heterocyclic compounds.

• 社団法人日本薬学会の論文
• 1987-01-25

著者

• 筧 昭一

  Department Of Chemistry And Material Engineering Faculty Of Engineering Shinshu University

• 伊東 祐隆

  Department of Chemistry and Material Engineering, Faculty of Engineering, Shinshu University

• 永田 憲治

  Department of Industrial Chemistry, Faculty of Engineering, Shinshu University

• 木下 直純

  Department of Industrial Chemistry, Faculty of Engineering, Shinshu University

• 柿沼 昇

  Department of Industrial Chemistry, Faculty of Engineering, Shinshu University

• 柿沼 昇

  Department Of Industrial Chemistry Faculty Of Engineering Shinshu University

• 永田 憲治

  Department Of Industrial Chemistry Faculty Of Engineering Shinshu University

• 木下 直純

  Department Of Industrial Chemistry Faculty Of Engineering Shinshu University

• 伊東 祐隆

  Department Of Chemistry And Material Engineering Faculty Of Engineering Shinshu University

関連論文

• Preparation of New Nitrogen-Bridged Heterocycles. XXXIII. A New Preparative Method for Thieno[3,2-α]indolizines
• Preparation of New Nitrogen-Bridged Heterocycles. XXXI. Cyclization Aptitudes of 2-Acylmethyl-thio-3-cyanoindolizines Having a Cyano or an Ester Group at the 1-Position
• Preparation of New Nitrogen-Bridged Heterocycles. XXVI. Crystal Structures of Thieno[3,2-a]-and Thieno[2,3-b]indolizine Derivatives
• Preparation of New Nitrogen-Bridged Heterocycles. XXIV. : Syntheses and Reactions of Pyrazolo[1,5-a]pyridine-2-thiols. (2)
• Preparation of New Nitrogen-Bridged Heterocycles. XXIII. : Syntheses and Reactions of Pyrazolo[1,5-a]pyridine-2-thiols. (1)
• Preparation of New Nitrogen-Bridged Heterocycles. XXII. : A New Approach to the Syntheses of Thienoindolizine Derivatives
• Preparation of New Nitrogen-Bridged Heterocycles. XIV. Further Investigation of the Desulfurization and the Rearrangement of Pyrido[1,2-d]-1,3,4-thiadiazine Intermediates(Organic,Chemical)
• Preparation of New Nitrogen-Bridged Heterocycles. XIII. : Syntheses of Some Tricyclic and Tetracyclic Indolizine Derivatives with Antiallergic Activity

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