reaction with benzaldehyde, which were then used as heterodienes in the inverse-electron-demand hetero Diels–Alder cycloadditions with norbornene as a dienophile at 25 °C. The reactions with norbornene were found to proceed with 100% exo-selectivity as determined by NMR experiments. The hetero Diels–Alder reactions with axially chiral heterodienes with ΔG#>116 kJ/mol showed kinetic atroposelectivities up
                                    使用Lawesson试剂(LR)从相应的
噻唑烷-4-酮合成2-Arylimino-3-芳基
噻唑烷-4-
硫酮,然后通过以下方法将其转化为5-苄基-2-芳基-3-芳基
噻唑烷-4-
硫酮与
苯甲醛的反应,然后将其用作反电子需求的杂Diels-Alder环加成反应中的杂二烯,
降冰片烯作为亲二烯体,在25  ° C下进行。发现与
降冰片烯的反应以100%的exo-选择性进行,通过NMR进行了测定实验。轴向手性杂二烯与ΔG #的杂Diels-Alder反应> 116 kJ / mol的动力学熵选择性达到11:1。但是,发现该产物达到了平衡,如通过97.1 kJ / mol对最受空间阻碍的产物的旋转受阻的阻隔所揭示的,在24小时反应后产生了2:1的非对映选择性。