Synthesis of 3-trimethylsiloxy-1-(furan-3-yl)butadiene and its reactions with dienophiles
作者:Maxim E. Mironov、Irina Yu. Bagryanskaya、Elvira E. Shults
DOI:10.1007/s10593-016-1897-4
日期:2016.6
furan-3-yl)butadiene was synthesized and studied in reactions with 2,2-dimethyl-5-methylidene-1,3-dioxane-4,6-diones, 5-methylenepyrimidine-2,4,6-triones, as well as with imines. Reactions with dienophiles containing an exo-methylene double bond in the presence of L-proline occurred regio- and stereoselectively with the formation of 7-(furan-3-yl)spiro[5,5]undecane-1,5,9-triones or 7-(furan-3-yl)-2
合成了3-三甲基甲硅烷氧基-1-(呋喃-3-基)丁二烯,并与2,2-二甲基-5-亚甲基-1,3-二恶烷-4,6-二酮,5-亚甲基嘧啶-2,4进行了反应研究。 ,6-三酮,以及与亚胺。在L-脯氨酸存在下,与含有外亚甲基双键的亲双烯体的反应在区域和立体选择性发生,并形成7-(呋喃-3-基)螺[5,5]十一烷-1,5,9-三酮或7-(呋喃-3-基)-2,4-二氮杂螺[5.5]十一烷-1,3,5,9-四酮。在路易斯酸存在下,二烯与由L-苯丙氨酸甲酯和甲醛制得的亚甲基亚胺反应,导致生成2-(呋喃-3-基)哌啶-4-酮或烯反应的产物,甲基(2 S)-2-[(4 E)-5-(呋喃-3-基)-3-氧opent-4-en-1-基]氨基} -3-苯基丙酸酯。通过X射线结构分析证实了三种化合物的结构。