Abstract
Electrophilic heterocyclization of 2-alkenyllthioquinolin-3-carbaldehydes or 2-alkenylselenoquinolin-3-carbaldehydes 2, 3 under the action of iodine or bromine non-regioselectively leads to the formation of fused quinolinium trihalogenides 4, 5. Type of the chalcogen atom does not affect regiochemistry of halogenation.
摘要:2-烯基硫代喹啉-3-甲醛或2-烯基硒代喹啉-3-甲醛在碘或溴的作用下,非区域选择性地发生亲电杂环化反应,形成融合的喹啉三卤化物4、5。硒元素的类型不影响卤代反应的区域化学性质。