Cesium Carbonate Promoted Direct Arylation of Hydroxylamines and Oximes with Diaryliodonium Salts
作者:Yang Yang、Xunshen Wu、Jianwei Han、Song Mao、Xiaofei Qian、Limin Wang
DOI:10.1002/ejoc.201402920
日期:2014.11
A transition-metal-free approach for the arylation of hydroxylamines and oximes with diaryliodonium salts was developed. The reaction proceeded smoothly at room temperature in the presence of cesium carbonate. As a result, a wide range of N- and O-arylated hydroxylamines were synthesized in good to excellent yields (45-98%).
Palladium-Catalyzed Coupling of Hydroxylamines with Aryl Bromides, Chlorides, and Iodides
作者:Achim Porzelle、Michael D. Woodrow、Nicholas C. O. Tomkinson
DOI:10.1021/ol8025022
日期:2009.1.1
The bis-pyrazole phosphine ligand BippyPhos is effective for the palladium-catalyzedcross-coupling of hydroxylamines with arylbromides, chlorides, and iodides. Reactions proceed smoothly at 80 °C in toluene in the presence of Cs2CO3 to give synthetically versatile N-arylhydroxylamine products in good to excellent yield.
双吡唑膦配体BippyPhos对于钯催化的羟胺与芳基溴化物,氯化物和碘化物的交叉偶联有效。在80 C的甲苯中,Cs 2 CO 3的存在下,反应平稳进行,从而以良好至极佳的收率获得了合成用途广泛的N-芳基羟胺产品。
[EN] IMPROVED PROCESS FOR THE PREPARATION OF [3R,5R]-2-FLUOROPHENYL-β,δ- DIHYDROXY-5-(1-METHYLETHYL)-3-PHENYL-4-[(2-HYDROXYPHENYLAMINO)- CARBONYL]-1H-PYRROLE-1-HEPTANOIC ACID, SODIUM SALT<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION D'UN SEL DE SODIUM DE L'ACIDE [3R,5R]-2-FLUOROPHÉNYL-Β,Δ-DIHYDROXY-5-(1-MÉTHYLÉTHYL)-3-PHÉNYL-4-[(2-HYDROXYPHÉNYLAMINO)-CARBONYL]-1H-PYRROLE-1-HEPTANOÏQUE
申请人:MSN LABORATORIES PRIVATE LTD
公开号:WO2016142954A2
公开(公告)日:2016-09-15
The present invention relates to an improved process for the preparation of [3R,5R]-2-fluorophenyl-β,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(2-hydroxyphenylamino)-carbonyl]-1H-pyrrole-1-heptanoic acid sodium salt compound of formula- 1 represented by the following structural formula: