Synthesis of Heterocycles with MF/Al 2 O 3 Base-Systems: 2-Arylbenzofuranes and 2,3-Diarylisoquinolin-1(2H)-ones2-Benzyloxybenzaldehydes, -acetophenones and -benzophenones substituted in the benzyl part with electron-withdrawing groups, cyclize easily to 2-arylbenzofuranes by using a standardized KF- or CsF-Al2O3 base system. An efficient one-pot synthesis for 2,3-diarylisoquinolin-1(2H)-ones is possible by reacting a variety of arene carbaldehyde anils with phthalides under the same reaction conditions.
基于MF/
Al2O3体系合成杂环:2-芳基
苯并呋喃和2,3-二芳基
异喹啉-1(2H)-酮。通过使用标准化的KF-或CsF-
Al2O3碱体系,
2-苄氧基苯甲醛、
苯乙酮和
二苯甲酮在苄位被吸电子基团取代的化合物可以容易地环化成2-芳基
苯并呋喃。在相同的反应条件下,各种
芳烃醛与
酞内酯反应可以实现2,3-二芳基
异喹啉-1(2H)-酮的高效一锅法合成。