Yakovleva, N. L. published the artcileReaction of carboxy-, carbethoxy-, and hydroxymethylpyridines with phosphorous amides, Safety of N,N-Diethylisonicotinamide, the publication is Khimiko-Farmatsevticheskii Zhurnal (1980), 14(1), 67-9, database is CAplus.
Heating nicotinic acid, isonicotinic acid or their Et esters with P(NEt2)3 gave 34.8-88% resp. diethylamides; yields were higher (88%, 79.5%) using the acids. Amines I and II were prepared in 21.5 and 14.8% yield resp. from the corresponding hydroxymethyl derivatives
Khimiko-Farmatsevticheskii Zhurnal published new progress about 530-40-5. 530-40-5 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is N,N-Diethylisonicotinamide, and the molecular formula is C10H9NO, Safety of N,N-Diethylisonicotinamide.
Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics