The author of 《Heterosubstituted 4-vinylimidazoles – preparation and diels-alder reactions》 were Ray, Abhisek; Mukherjee, Sabuj; Das, Jayanta; Bhandari, Manoj; Herath, Apsara; Yousufuddin, Muhammed; Lovely, Carl J.. And the article was published in Heterocycles in 2019. Synthetic Route of C4H9NO2 The author mentioned the following in the article:
The Diels-Alder reactions of vinylimidazole derivatives provide an expedient stereocontrolled entry into polysubstituted tetrahydrobenzimidazole derivatives Prior studies have described methods for postcycloaddn. functionalization of these adducts, however, in several cases unable to achieve appropriate elaboration of cycloadducts and have sought alternatives. To circumvent this problem, pre-cycloaddition functionalization through the preparation of vinyl-substituted derivs was investigated . Initial studies with vinyl halides or silyl enol ethers were compromised either by poor yields or postcycloaddn. elimination. However, vinylsilanes and vinylstannanes participate in Diels-Alder reactions with retention of the heterosubstituent and provide a means for further elaboration, for example through Fleming-Tamao oxidation After reading the article, we found that the author used N-Methoxy-N-methylacetamide(cas: 78191-00-1Synthetic Route of C4H9NO2)
N-Methoxy-N-methylacetamide(cas: 78191-00-1) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.Synthetic Route of C4H9NO2
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics