A chiral II/IIII catalysis platform is reported to facilitate the fluorocyclization of 2-vinyl benzaldehydes thereby generating novel fluorinated isochromans in a single operation (up to >95 : 05 d.r. and 97 : 03 e.r.). Not only does the benzylic fluoride shield an oxidatively labile position, X-ray analyses demonstrate that the [CH2-CHF] fragment functions as a stereoelectronic mimic of the O-CH(OR)
据报道,手性 I/I III催化平台可促进
2-乙烯基苯甲醛的
氟环化,从而在一次操作中生成新型
氟化
异色满(高达 >95: 05 dr . 和 97: 03 er .)。
氟化苄不仅屏蔽了氧化不稳定的位置,X射线分析还表明[CH 2 -CHF]片段起到了O -CH(OR)
乙缩醛基序的立体电子模拟物的作用。