Chaisan, Nattawadee et al. published their research in Tetrahedron Letters in 2018 |CAS: 157869-15-3

The Article related to indole acetyl substituted preparation acetylalkynylaniline cyclization platinum chloride catalyst, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Category: ethers-buliding-blocks

On February 14, 2018, Chaisan, Nattawadee; Kaewsri, Wilailak; Thongsornkleeb, Charnsak; Tummatorn, Jumreang; Ruchirawat, Somsak published an article.Category: ethers-buliding-blocks The title of the article was PtCl4-catalyzed cyclization of N-acetyl-2-alkynylanilines: A mild and efficient synthesis of N-acetyl-2-substituted indoles. And the article contained the following:

An efficient synthesis of N-acetyl-2-substituted indole derivatives via direct intramol. hydroamination of N-acetyl-2-alkynylaniline derivatives was developed. The reaction could be applied to a wide range of substrates employing only 1-2 mol% of PtCl4 as the catalyst to furnish the desired indole products in moderate to excellent yields. The current protocol is efficient, reliable and scalable, and could serve as an important tool for convenient and rapid access to this important class of N-heterocyclic skeleton from readily available substrates. The experimental process involved the reaction of 2-((4-Methoxyphenyl)ethynyl)aniline(cas: 157869-15-3).Category: ethers-buliding-blocks

The Article related to indole acetyl substituted preparation acetylalkynylaniline cyclization platinum chloride catalyst, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem