The reactions of 3-aryl-1,2,4-triazines with beta-aminovinyl ketones or ethyl beta-amino-crotonates in acetic anhydride at room temperature afforded cyclic products of the tandem nucleophilic addition, viz., 3a,4,7,7a-tetrahydro-1H-pyrrolo[3,2-e]-1,2,4-triazines, in good yields. Under oxidative conditions, the latter compounds underwent the pyrrole-ring opening under the action of potassium permanganate to form the corresponding triazinones and were transformed into thriazolyl-substituted pyridines under the action of selenious acid.
Aminovinyl ketones and aminovinyl esters as CCN building blocks for the synthesis of 1H-pyrrolo[3,2-e]1,2,4-triazines
摘要:
5,6-Unsubstituted-3-aryl-1,2,4-triazines were found to react with aminovinyl ketones and aminovinyl esters in acetic anhydride to form derivatives of 3a,4,7,7a-tetrahydro-1H-pyrrolo[3,2-e]1,2,4-triazines in good yields. (C) 2003 Elsevier Science Ltd. All rights reserved.
Aminovinyl ketones and aminovinyl esters as CCN building blocks for the synthesis of 1H-pyrrolo[3,2-e]1,2,4-triazines
作者:Valery N Charushin、Nataliya N Mochulskaya、Anatoly A Andreiko、Vera I Filyakova、Mikhail I Kodess、Oleg N Chupakhin
DOI:10.1016/s0040-4039(03)00060-1
日期:2003.3
5,6-Unsubstituted-3-aryl-1,2,4-triazines were found to react with aminovinyl ketones and aminovinyl esters in acetic anhydride to form derivatives of 3a,4,7,7a-tetrahydro-1H-pyrrolo[3,2-e]1,2,4-triazines in good yields. (C) 2003 Elsevier Science Ltd. All rights reserved.
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作者:V. N. Charushin、N. N. Mochul'skaya、A. A. Andreiko、M. I. Kodess、D. V. Beskrovnyi、I. A. Litvinov、O. G. Sinyashin、O. N. Chupakhin
DOI:10.1023/a:1026140218972
日期:——
The reactions of 3-aryl-1,2,4-triazines with beta-aminovinyl ketones or ethyl beta-amino-crotonates in acetic anhydride at room temperature afforded cyclic products of the tandem nucleophilic addition, viz., 3a,4,7,7a-tetrahydro-1H-pyrrolo[3,2-e]-1,2,4-triazines, in good yields. Under oxidative conditions, the latter compounds underwent the pyrrole-ring opening under the action of potassium permanganate to form the corresponding triazinones and were transformed into thriazolyl-substituted pyridines under the action of selenious acid.