Palladium catalyzed divergent cycloadditions of vinylidenecyclopropane-diesters with methyleneindolinones enabled by zwitterionic 蟺-propargyl palladium species was written by Niu, Ben;Wei, Yin;Shi, Min. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2021.Formula: C14H9NO2 This article mentions the following:
A palladium-catalyzed divergent synthesis of spirooxindoles fused with a five- or a six-membered ring by a cycloaddition reaction of vinylidenecyclopropane-diesters with methyleneindolinones was disclosed. This protocol features an in situ generated unprecedented zwitterionic 蟺-propargyl palladium species in cycloaddition reactions and a switchable process between (3+2) and (4+2) cycloadditions by changing the phosphine ligand. In the experiment, the researchers used many compounds, for example, 1-Phenylindoline-2,3-dione (cas: 723-89-7Formula: C14H9NO2).
1-Phenylindoline-2,3-dione (cas: 723-89-7) belongs to indole derivatives. Indole produced by Proteus, Pseudomonas, Escherichia and other species was shown to be a growth promoting factor in Arabidopsis thaliana. Due to this activity, the indole ring system has become an important component or intermediate in the synthesis of heterocycles.Formula: C14H9NO2
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Indole alkaloid derivatives as building blocks of natural products from聽Bacillus thuringiensis聽and聽Bacillus velezensis聽and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles