Azocinoindole Synthesis by a Gold(I)-Catalyzed Ring Expansion of 2-Propargyl-β-Tetrahydrocarboline
作者:Lei Zhang、Lina Chang、Hongwen Hu、Huaqin Wang、Zhu-Jun Yao、Shaozhong Wang
DOI:10.1002/chem.201304524
日期:2014.3.3
A new methodology taking advantage of gold(I)‐catalyzed ringexpansion has been developed to assemble tricyclic 1H‐azocino[5,4‐b]indoles from 2‐propargyl‐β‐tetrahydrocarbolines. The azocinoindoles were obtained in moderate to excellent yields; the structure of which was established by X‐ray crystallographic analysis. A mechanism involving regioselective intramolecular hydroarylation, [1,2]‐alkenyl
A method for producing a propargylamine compound represented by the general formula (I):
which comprises reacting a propargyl compound represented by the general formula (II):
with an aromatic aldehyde represented by the general formula (III):
ArCHO (III)
and ammonia to obtain an imine compound represented by the general formula (IV):
and hydrolyzing the resultant imine compound. It is to provide a method for producing a propargylamine compound from a propargyl compound by a simple operation without using a special facility, using ammonia as a reaction reagent, without producing a dipropatygylamine compound and a tripropargylamine compound as by-products.