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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/25284

    Title: Selective synthesis of pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl) formamide, or N-(1H-pyrazol-5-yl)formamidine derivatives from N-1-substituted-5-aminopyrazoles with new Vilsmeier-type reagents
    Authors: Chang, Chun-Hsi;蔡建鈞;Tsai, Henry Jan-Jen;Huang, Yu-Ying;Lin, Hui-Yi;Wang, Li-Ya;Wu, Tian-Shung;Wong, Fung Fuh
    Contributors: 保健營養生技學系
    Keywords: Vilsmeier reaction;5-Aminopyrazoles;Pyrazolo[3,4-d]pyrimidine;Formamidine;Formamide
    Date: 2013-01
    Issue Date: 2013-07-11 14:02:22 (UTC+8)
    Abstract: Various halomethyleniminium salts as novel Vilsmeier agents were synthesized from formamide or N-methylformamide with POCl3. Treatment of N-1-substituted-aminopyrazoles including N-1-phenyl-5-aminopyrazoles, N-1-(2-pyridinyl)-5-aminopyrazoles, and N-1-(2-quinolinyl)-5-aminopyrazoles with these agents gave the corresponding pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl)formamide, or N-(1H-pyrazol-5-yl)formamidine. The reaction was different from the traditional Vilsmeier-type reaction and the plausible reactive pathways were proposed for the unexpected result.
    Relation: TETRAHEDRON, 69(4):1378-1386.
    Appears in Collections:[食品營養與保健生技學系] 期刊論文

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