作者:Jason C. Green、Sandra Jiménez-Alonso、Eric. R. Brown、Thomas R. R. Pettus
DOI:10.1021/ol2022214
日期:2011.10.21
confirmation of their actual structures was a diastereoselective inverse-demand Diels–Alder reaction between an optically active enol ether and an ortho-quinone methide species, which was generated in situ at low temperature by the sequential addition of methylmagnesium bromide and di-tert-butyl dicarbonate to a salicylaldehyde.
据称在(6)罐中完成了两个据称是(+)-螺旋烯的结构的总合成。合成化合物与天然化合物之间的光谱比较显示,八烯环中八元环的分配不正确。合成拟议结构和确定其实际结构的关键步骤是光学活性烯醇醚与邻醌甲基化物之间的非对映选择性逆反应Diels-Alder反应,该反应是在低温下原位生成的。将甲基溴化镁和二碳酸二叔丁酯依次添加到水杨醛中。