5-dimethyl-10-oxo- and 10-hydroxy-10-allyldihydrobenzosilanopyridinium N-cyanomethyl salts with salicyl- and 5-bromosalicylaldehydes. It was found that in the case of the 10-allyl-10-hydroxy-dihydrobenzosilanopyridinium salts the reaction occurred at both α-positions of the pyridine fragment to form a mixture of the isomeric benzosilano[3,2-c]- and benzosilano[2,3-d]chromenoimidazo-pyridines.
通过5,
5-二甲基-10-氧代和10-羟基-10-烯丙基二氢苯甲
硅烷基
吡啶鎓N-
氰甲基甲基盐与
水杨基-和5-
溴水杨基醛的多米诺反应完成苯并甲
硅烷基
铬基亚
氨基
咪唑并
吡啶的合成。发现在10-烯丙基-10-羟基-二氢苯并甲
硅烷基
吡啶鎓盐的情况下,反应在
吡啶片段的两个α-位发生,形成异构体苯并甲
硅烷基[3,2- c ]-和苯并甲
硅烷基[ 2,3 - d ] chromenoimidazo-pyridines。