A simple metal-free, step-economic and selective access to pyridines from readily available substrates is reported, involving a flexible 4 A molecular sieves promoted Michael addition initiated domino three-component reaction between a 1,3-dicarbonyl, a Michael acceptor and a synthetic equivalent of ammonia.
据报道,一种简单的无
金属的,经济易行的,可选择性地从易于获得的底物上获得
吡啶的方法,涉及一种灵活的4 A
分子筛,该
分子筛促进了1,3-二羰基,迈克尔受体和
环戊烯之间的迈克尔加成引发的多米诺三组分反应。合成当量的
氨。