51598-76-6Relevant articles and documents
Catalytic Deoxygenative Coupling of Aromatic Esters with Organophosphorus Compounds
Kurosawa, Miki B.,Isshiki, Ryota,Muto, Kei,Yamaguchi, Junichiro
supporting information, p. 7386 - 7392 (2020/04/30)
We have developed a deoxygenative coupling of aromatic esters with diarylphosphine oxides/dialkyl phosphonates under palladium catalysis. In this reaction, aromatic esters can work as novel benzylation reagents to give the corresponding benzylic phosphorus compounds. The key of this reaction is the use of phenyl esters, an electron-rich diphosphine as a ligand, and sodium formate as a hydrogen source. Arylcarboxylic acids were also applicable in this reaction using (Boc)2O as an additive. Palladium/dcype worked to activate the acyl C-O bond of the ester and to support the reduction with sodium formate.
Nickel-Catalyzed Oxidative Decarboxylative Annulation for the Synthesis of Heterocycle-Containing Phenanthridinones
Honeycutt, Aaron P.,Hoover, Jessica M.
supporting information, p. 7216 - 7219 (2018/11/23)
A nickel-catalyzed oxidative decarboxylative annulation reaction of simple benzamides and (hetero)aromatic carboxylates has been developed. This reaction provides access to a large array of phenanthridinones and their heterocyclic analogues, highlighting the utility and versatility of oxidative decarboxylative coupling strategies for C-C bond formation.
NITROGEN-CONTAINING FUSED RING COMPOUNDS AS CRTH2 ANTAGONISTS
-
Paragraph 0286, (2014/10/16)
The present application relates to nitrogen-containing fused ring compounds shown by general formula (I), a pharmaceutically acceptable salt thereof and a stereoisomer thereof as CRTH2 antagonist, wherein X1, X2, X3, X4, X5, W, X, Y, L1, L2, L3, A, B are as defined in the description; the present application further relates to a method for preparing the compounds, a pharmaceutical formulation and a pharmaceutical composition comprising the compounds, a use of the compounds for the manufacture of a medicament for the treatment and/or prevention of diseases related to activity of CRTH2.