The titled compound 2 was readily prepared by thermal desulfonylation of 3-(phenylthio)-3-sulfolene (1). The aza-Diels-Alder reactions of 2 with some simple iminium salts gave the cyclized products 3–7 in good yield with complete control of regiochemistry.
通过3-(苯
硫基)-3-
环丁砜(1)的热脱磺酰化容易地制备标题化合物2。2 与一些简单的
亚胺盐的 aza-Diels-Alder 反应在完全控制区域
化学的情况下以良好的收率得到环化产物 3-7。