Boehme, H. published the artcilePreparation, properties, and rearrangement of (β-alkoxycarbonylalkylidene)ammonium salts, Application of Ethyl 3-(dimethylamino)acrylate, the publication is Tetrahedron (1977), 33(8), 841-5, database is CAplus.
Methylation and protonation of β-alkoxycarbonyl enamines gave iminium salts which were characterized by 1H NMR spectroscopy. E.g., methylation with MeI and protonation with HCl of Me2NCH:CMeCO2Et gave (Me2N:CHCMe2CO2Et)+ (I) and (Me2N:CHCHMeCO2Et)+, resp. The reactions of the iminium salts with PhMgBr, MeMgBr, dimedone, and PhCOMe were studied; in some cases, secondary reactions involving amine elimination occurred. E.g., I with MeMgBr and PhCOMe gave Me2NCHMeCMe2CO2Et and PhCOCH:CHCMe2CO2Et, resp.
Tetrahedron 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, Application of Ethyl 3-(dimethylamino)acrylate.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics