Mannich reaction in the synthesis of N,S-containing heterocycles. 16.*Synthesis of derivatives of tetra-hydropyrido[1,2-a][1,3,5]triazine and 5,6,12,13-tetra-hydro-1H,8H-dipyrido[1,2-a:1',2'-e][1,3,5,7]tetrazocine
作者:V. V. Dotsenko、S. Yu. Suikov、T. M. Pekhtereva、S. G. Krivokolysko
DOI:10.1007/s10593-013-1339-5
日期:2013.10
aromatic amines were used 3,10-diaryl-1,8-dithioxo-5,6,12,13-tetrahydro-1H,8H-dipyrido[1,2-a:1′,2′-e][1,3,5,7]tetrazocine-2,4,9,11-tetracarbonitriles or their mixtures with the above-mentioned pyrido[1,2-a][1,3,5]triazines were obtained. Dipyrido[1,2-a:1′2′-e]-[1,3,5,7]tetrazocine derivatives were also synthesized by direct condensation of 6-amino-4-aryl-2-thioxo-1,2-dihydro-pyridine-3,5-dicarbonitriles
在碱催化条件下,研究了伯胺和过量甲醛作用下6-氨基-4-芳基-2-硫代-2-1,2-二氢吡啶-3,5-二腈的氨基甲基化。发现产物的结构和产率在很大程度上取决于起始胺的结构,还取决于试剂的比例和反应条件。在烷基或芳基烷基胺的情况下,8-芳基-3-烷基(芳基烷基)-6-thioxo-1,3,4,6-四氢-2 H-吡啶[1,2- a ] [1,3, 5]制得了三嗪-7,9-二腈,而当使用芳香胺时,则使用了3,10-二芳基-1,8-二硫代-5,6,12,13-四氢-1 H,8 H-双吡啶[1, 2- a:1′,2′- e获得了[[1,3,5,7]四唑啉-2,4,9,11-四腈或它们与上述吡啶并[1,2- a ] [1,3,5]三嗪的混合物。双吡啶[1,2- a:1'2'- e ]-[1,3,5,7]四唑啉衍生物也通过6-氨基-4-芳基-2-硫代-1,2-直接缩合而合成。二氢吡啶-3,5-二腈与甲醛。