Kumar, Krishna; Singh, Bhuvnesh; Hore, Soumyadip; Singh, Ravi P. published their research in New Journal of Chemistry in 2021. The article was titled 《Catalytic enantioselective synthesis of chiral 4-hydroxy 4′-substituted pyrazolones by the vinylogous aldol reaction of pyrazole-4,5-diones with 3-alkylidene-2-oxindoles》.Related Products of 4949-44-4 The article contains the following contents:
A bifunctional quinine-derived benzamide catalyzed direct enantioselective vinylogous aldol reaction between 3-alkylidene-2-oxindoles and pyrazole-4,5-diones was developed. This challenging protocol was achieved via the H-bonding dual activation mode of the catalyst. Highly functional rich pyrazolone moieties had an oxindole core was obtained with an excellent E/Z (>19 : 1), and high yields along with moderate enantioselectivity. The experimental part of the paper was very detailed, including the reaction process of Ethyl 3-oxopentanoate(cas: 4949-44-4Related Products of 4949-44-4)
Ethyl 3-oxopentanoate(cas: 4949-44-4) belongs to ketone compounds. Ketones are highly reactive, although less so than aldehydes, to which they are closely related. Much of their chemical activity results from the nature of the carbonyl group. Ketones readily undergo a wide variety of chemical reactions.Related Products of 4949-44-4
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