Ruthenium-Catalyzed Direct CH Amidation of Arenes Including Weakly Coordinating Aromatic Ketones
作者:Jiyu Kim、Jinwoo Kim、Sukbok Chang
DOI:10.1002/chem.201301025
日期:2013.6.3
CH activation: The ruthenium‐catalyzed direct sp2 CHamidation of arenes by using sulfonyl azides as the amino source is presented (see scheme). A wide range of substrates were readily amidated including arenes bearing weakly coordinating groups. Synthetic utility of the thus obtained products was demonstrated in the preparation of biologically active heterocycles.
An efficient Ru(II)-catalyzed intermolecularamidation of weakly coordinating ketones with sulfonyl azides via C-H bond activation is described. The reaction proceeds with high functional group tolerance, providing a novel approach to practical ketone-directed intermolecular C-N bond formation in the absence of an additional oxidant.
A Palladium- and Copper-Catalyzed Synthesis of Dihydro[1,2-<i>b</i>]indenoindole-9-ol and Benzofuro[3,2-<i>b</i>]indolines: Metal-Controlled Intramolecular CC and CO Bond-Forming Reactions
作者:Siva Senthil Kumar Boominathan、Jeh-Jeng Wang
DOI:10.1002/chem.201503210
日期:2015.11.16
copper‐catalyzed synthesis of dihydro[1,2‐b]indenoindole‐9‐ol and benzofuro[3,2‐b]indolines has been developed, whereby the same starting material is employed for the synthesis of both heterocyclic scaffolds and the selectivity of the product is controlled by switching the choice of metal. Salient features of these cascade reactions include wide‐ranging functional group tolerance, simple reaction conditions
二氢[1,2的钯和铜-催化的合成b ]茚并吲哚-9-醇和苯并呋喃并[3,2- b ]二氢吲哚已经开发,由此被用于两个杂环支架的合成相同的起始材料通过切换金属的选择来控制产品的选择性。这些级联反应的显着特征包括广泛的官能团耐受性,简单的反应条件以及中等至高收率。