Al-Taweel, Samir A. published the artcilePalladium-catalyzed amination of 2-chlorothienopyridone with primary aromatic amines, SDS of cas: 924-99-2, the publication is Cogent Chemistry (2019), 5(1), 1567894/1-1567894/12, database is CAplus.
A series of Et 7-cyclopropyl-2-(arylamino)-3-nitro-4-oxo-4,7-dihydrothieno[2,3-b]pyridine-5-carboxylates I (R1 = H; R2 = H, Me, F etc,) were prepared by coupling of Et 7-cyclopropyl-2-chloro-3-nitro-4-oxo-4,7-dihydrothieno[2,3-b]pyridine-5-carboxylate with primary aromatic amines via palladium-catalyzed amination using palladium acetate Pd(OAc)2 in the presence of cesium fluoride in good yields. 7-Cyclopropyl-2-(phenylamino)-3-nitro-4-oxo-4,7-dihydrothieno[2,3-b]pyridine-5-carboxylic acid showed weak activity against E.aerogenas and S.aureus bacteria.
Cogent Chemistry published new progress about 924-99-2. 924-99-2 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Amine,Aliphatic hydrocarbon chain,Ester, name is Ethyl 3-(dimethylamino)acrylate, and the molecular formula is C7H13NO2, SDS of cas: 924-99-2.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics