Vettori, L. Pecori published the artcileSynthesis of 4,9-dimethoxy-5-methyl-7H-furo[3,2-g]-1-benzopyran-7-one-6-carboxylic acid derivatives, COA of Formula: C5H8N2O, the publication is Farmaco, Edizione Scientifica (1975), 30(9), 754-60, database is CAplus.
The title compounds I (X = O, R = CN, CO2Et, CO2H, COCl, H, CONH2, CONEt2, CONH(CH2)4OH, NHCH2CHMe2, NHCH2CH2NEt2, morpholino, 2-pyridylamino, OCH2CH2NMe2, OCHMeCH2NEt2, O(CH2)3NEt2, OCH2CH2NEt2; X = NH, R = CN) were prepared from Khellinone. Thus condensation of Khellinone with NCCH2CONHR1 (R1 = H, Me, Et), CH2(CO2Et)2, CH2(CONH2)2, and CH2(CN)2 gave I (X = O, R = CN, CO2Et, CONH2; X = NH, R = CN). Hydrolysis of the ester gave I (R = CO2H), which was chlorinated and aminated.
Farmaco, Edizione Scientifica published new progress about 15029-36-4. 15029-36-4 belongs to amides-buliding-blocks, auxiliary class Nitrile,Amine,Aliphatic hydrocarbon chain,Amide, name is 2-Cyano-N-ethylacetamide, and the molecular formula is C8H11NO, COA of Formula: C5H8N2O.
Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics