Modular click chemistry libraries for functional screens using a diazotizing reagent was written by Meng, Genyi;Guo, Taijie;Ma, Tiancheng;Zhang, Jiong;Shen, Yucheng;Sharpless, Karl Barry;Dong, Jiajia. And the article was included in Nature (London, United Kingdom) in 2019.Quality Control of Methyl 4-aminobicyclo[2.2.2]octane-1-carboxylate This article mentions the following:
Alkyl and aryl azides were prepared from the corresponding primary alkyl and aryl amines by reaction with fluorosulfonyl azide generated in situ from a fluorosulfonylimidazolium triflate and sodium azide, expanding access to azides and both to the 1,2,3-triazoles derived from them and to functional screens employing them. The method allowed the preparation of a library of >1000 azides from the corresponding amines; the azide library underwent copper-catalyzed azide-alkyne cycloaddition reactions to yield a library of >1000 1,2,3-triazoles. In the experiment, the researchers used many compounds, for example, Methyl 4-aminobicyclo[2.2.2]octane-1-carboxylate (cas: 135908-33-7Quality Control of Methyl 4-aminobicyclo[2.2.2]octane-1-carboxylate).
Methyl 4-aminobicyclo[2.2.2]octane-1-carboxylate (cas: 135908-33-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Quality Control of Methyl 4-aminobicyclo[2.2.2]octane-1-carboxylate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics