A tandem cyclization reaction of diethyl 2-(2-aminobenzamido)malonates and 2-bromobenzaldehydes was developed for the synthesis of isoindolo[1,2-b]quinazoline derivatives. The quinazoline was formed first catalyzed by CuI, followed by a noteworthy α-arylation reaction under Pd and ligand-free conditions in the presence of Cs2CO3.
开发了2-(2-
氨基苯甲酰胺基)
丙二酸二乙酯和2-
溴苯甲醛的串联环化反应,用于合成异
吲哚并[1,2- b ]
喹唑啉衍
生物。
喹唑啉首先由CuI催化形成,然后在Cs 2 CO 3存在下,在Pd和无
配体条件下发生明显的α-芳基化反应。