are described for the synthesis of the corresponding tetrahydropyridines and pyran derivatives, respectively. In particular, the use of pyridine-carboxaldehydes for aza-silyl-Prins reaction led to either a symmetrical triarylmethane or two new bicyclic compounds. 4-Fluorinated-2-substituted tetrahydropyran derivatives were also obtained in the oxa-Prins cyclization with good selectivity in favor of
描述了连续流
化学中的氮杂-甲
硅烷基-Prins和氧杂-Prins环化反应,分别用于合成相应的四氢
吡啶和
吡喃衍
生物。特别是,将
吡啶-
甲醛用于氮杂-甲
硅烷基-Prins反应可导致对称的三芳基
甲烷或两种新的
双环化合物。在oxa-Prins环化中还获得了4-
氟-2-取代的
四氢吡喃衍
生物,其具有良好的选择性,有利于抗异构体。