2-Amino-1,3,5-triazine chemistry: hydrogen-bond networks, Takemoto thiourea catalyst analogs, and olfactory mapping of a sweet-smelling triazine
作者:Li Xiao、Alexander Pöthig、Lukas Hintermann
DOI:10.1007/s00706-015-1515-7
日期:2015.9
xyl]thioureas, with hetaryl representing either 4,6-dimethyl-1,3-diazin-2-yl, 4,6-diisopropyl-1,3,5-triazin-2-yl, or 4,6-di-tert-butyl-1,3,5-triazin-2-yl groups. These compounds are structural analogs of Takemotos’s chiral thiourea organocatalysts (1-[3,5-bis(trifluoromethyl)phenyl]-3-[(1S,2S)-2-(dimethylamino)cyclohexyl]thiourea) with an aza-aryl instead of the 3,5-bis(trifluoromethyl)phenyl group
摘要研究了具有庞大烷基取代基的4,6-二烷基-2-氨基-1,3,5-三嗪的化学性质,并探讨了它们作为制备手性硫脲有机催化剂的基础。氨与4,6-二叔丁基-2-氯-1,3,5-三嗪反应生成4,6-二叔丁基-1,3,5-三嗪-2-胺根据X射线晶体学分析,氢键网络处于固态。将选定的杂环胺转化为异硫氰酸酯,后者与(S,S)-2-(二甲基氨基)环己胺反应,生成对映体纯的1-杂芳基-3- [2-(二甲基氨基)环己基]硫脲,杂芳基代表4, 6-二甲基-1,3-二嗪-2-基,4,6-二异丙基-1,3,5-三嗪-2-基或4,6-二叔丁基-1,3,5-三嗪-2-基-丁基。这些化合物是Takemotos手性硫脲有机催化剂(1- [3,5-双(三氟甲基)苯基] -3-[(1 S,2 S)-2-(二甲基氨基)环己基]硫脲)的结构类似物。而不是3,5-双(三氟甲基)苯基。它们具有强大的分子内N–H至N-1氢键,如1-(4