First Suzuki–Miyaura type cross-coupling of ortho-azidobromobenzene with arylboronic acids and its application to the synthesis of fused aromatic indole-heterocycles
short synthesis of some fused indole-heterocycles has been achieved via Pd-catalyzed cross-coupling reactions between azido-2-bromobenzene and arylboronicacids and subsequent thermally induced nitrene insertion. Additionally, 4-amino-α-carboline, a versatile intermediate toward grossularine analogs has also been prepared by Suzuki–Miyaura cross-coupling of 4-pivaloylaminopyridine-3-boronic acid with
Merging the ability of cationic gold(I) catalysts to activate unsaturated π-systems with the electrophiles-driven ring-opening reactions of furans, we describe a new approach to synthesize 2-spiroindolin-3-ones from 4H-furo[3,2-b]indoles. The reaction occurs through a cascade sequence involving addition of a gold-activated allene to the furan moiety of the starting furoindole followed by a ring-opening/ring-closing
结合阳离子金(I)催化剂活化不饱和π系统与呋喃的亲电试剂驱动开环反应的能力,我们描述了一种由4 H-呋喃合成2-spiroindolin-3-ones的新方法[3, 2- b ]吲哚。该反应通过级联序列发生,该级联序列包括向起始呋喃吲哚的呋喃部分中添加金激活的丙二烯,然后进行开环/闭环事件,得到2-螺环戊烷-1,2-二氢-3 H-吲哚啉- 3-ones,中等至良好的产量。