Phosphazene Superbase-Mediated Regio- and Stereoselective Iodoaminocyclization of 2-(1-Alkynyl)benzamides for the Synthesis of Isoindolin-1-ones
作者:Saurabh Mehta、Dhirendra Brahmchari
DOI:10.1021/acs.joc.9b00452
日期:2019.5.3
exclusive formation of products with Z-geometry (across the exo C═C bond) has been confirmed through X-raycrystallography. The methodology also provides an easy access to aristolactams, an important class of natural products. This has been successfully demonstrated by synthesizing two aristolactam derivatives (including Cepharanone B).
Palladium-catalyzed reaction of 2-alkynylhalobenzene with 2-alkynylbenzamide: an efficient approach to indeno[1,2-c]azepin-3(2H)-ones
作者:Yong Luo、Jie Wu
DOI:10.1039/c1cc14480d
日期:——
A novel and efficient route for rapid access to indeno[1,2-c]azepin-3(2H)-ones is described, which proceeds through a palladium-catalyzed tandem reaction of 2-alkynylhalobenzene with 2-alkynylbenzamide in the presence of PPh(3) or PCy(3). The indeno[1,2-c]azepin-3(2H)-ones which incorporate both indene and unsaturated seven-membered ring lactam skeletons are obtained in good to excellent yields.