I2 Catalyzed Direct α-Hydroxylation of β-Dicarbonyl Compounds with Atmospheric Oxygen under Photoirradiation was written by Miao, Chun-Bao;Wang, Yan-Hong;Xing, Meng-Lei;Lu, Xin-Wei;Sun, Xiao-Qiang;Yang, Hai-Tao. And the article was included in Journal of Organic Chemistry in 2013.Quality Control of Diethyl 2-(prop-2-yn-1-yl)malonate This article mentions the following:
An I2-catalyzed hydroxylation of β-dicarbonyl moieties using air as the oxidant under photoirradiation has been developed for the easy preparation of α-hydroxy-β-dicarbonyl compounds The transformation was completed with only 1 mol % of I2. With α-unsubstituted malonates, the hydroxylated dimerization product was afforded as the predominant product along with a minor product, α,α-dihydroxyl malonate. In the experiment, the researchers used many compounds, for example, Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9Quality Control of Diethyl 2-(prop-2-yn-1-yl)malonate).
Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Quality Control of Diethyl 2-(prop-2-yn-1-yl)malonate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics