4-(N-Boc-amino)-1Н-1,2,3-triazolecarbothioamides in the synthesis of a new heterocyclic [1,2,3]triazolo[4,5-e][1,4]thiazepine system
作者:Natalia A. Syrota、Sergiy V. Kemskiy、Andriy V. Bol’but、Igor I. Chernobaev、Oleksandr S. Liavinets、Mykhailo V. Vovk
DOI:10.1007/s10593-021-02989-1
日期:2021.8
respective 4-(N-Boc-amino)-5-thioimidates, which underwent intramolecular cyclocondensation upon treatment in saturated НCl solution in dioxane, producing 8-(alkylimino)-4,8-dihydro-1Н-[1,2,3]triazolo[4,5-e][1,4]thiazepin-5(6Н)-ones.
4-( N -Boc-amino)-1 Н -1,2,3-triazolecarbothioamides,通过4-( N -Boc-amino)-1 Н -1,2,3-triazoles与n -的顺序处理获得BuLi 和烷基异硫氰酸酯在 –78÷–60°C 下与溴乙酸乙酯反应,形成各自的 4- (N -Boc-氨基)-5-硫代亚胺酸酯,在二恶烷中的饱和 НCl 溶液中处理后发生分子内环缩合反应,产生 8 -(烷基亚氨基)-4,8-二氢-1 Н -[1,2,3] triazolo [4,5- e ][1,4]thiazepin-5(6 Н )-ones。