The present invention relates to compounds, compositions, combinations and medicaments containing said compounds and processes for their preparation. The invention also relates to the use of said compounds, combinations, compositions and medicaments, for example as modulators of alpha 1 antitrypsin and treating diseases associated with alpha antitrypsin, particularly liver diseases.
Metal-Free Oxidative Cyclization of Alkynyl Aryl Ethers to Benzofuranones
作者:Katharina Graf、Carmen L. Rühl、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/anie.201304813
日期:2013.11.25
Readily available phenols can be converted into substituted arylalkynylethers, which react with an N‐oxide as an oxidant and catalytic amounts of a Brønsted acid to provide benzofuranones. If non‐terminal alkynylethers are applied, a 1,2‐hydride shift takes place and phenyl acrylates are obtained. Thus activated alkynes can serve as α‐oxy carbene precursors even in the absence of a metal catalyst
Regioselective Synthesis of Benzofuranones and Benzofurans
作者:Xiaojie Zhang、Christopher M. Beaudry
DOI:10.1021/acs.joc.1c00341
日期:2021.5.7
preparation of the benzofuranones with programmable substitution at any position. Complex substitution patterns are readily created. The substituted benzofuranones can be converted to substituted benzofurans.
A palladium-catalyzed carbonylative intramolecular synthesis of benzofuran-2(3H)-ones from 2-hydroxybenzyl alcohols has been developed. In this procedure, formic acid was utilized as the CO source, and various benzofuran-2(3H)-one derivatives were obtained in moderate to good yields.
Anionic Homologous Fries Rearrangement of O-(2-Methylaryl)carbamates. A Regiospecific Route to Benzo[b]furan-2(3<i>H</i>)-ones including an Unnamed Metabolite from <i>Helenium</i> Species
A new LDA mediated O → C carbamoyl migration, 3 provides a general and efficient route to aryl acetamides 5, precursors to the benzo- and naphthofuranones 7, one of which serves as a starting material for a short synthesis of naturally-occurring benzofuranolactol 11 isolated from several Helenium species.
一种新的 LDA 介导的 O → C 氨基甲酰基迁移 3 为芳基乙酰胺 5(苯并呋喃酮和萘并呋喃酮 7 的前体)提供了一条普遍而有效的途径,其中一种芳基乙酰胺 5 可作为简短合成从几种 Helenium 植物中分离出来的天然苯并呋喃内酯 11 的起始原料。