75113-82-5Relevant articles and documents
Photocatalyst- And Transition-Metal-Free Visible-Light-Promoted Intramolecular C(sp2)-S Formation
Wang, Hao,Wu, Qi,Zhang, Jian-Dong,Li, Hai-Yan,Li, Hong-Xi
supporting information, p. 2078 - 2083 (2021/04/05)
A photocatalyst- and transition-metal-free visible-light-induced cyclization of ortho-halothiobenzanilides has been developed. Upon irradiation with visible light, substrates undergo dehalogenative cyclization to 2-aryl benzothiazoles with high efficiency and selectivity. This photocyclization exhibits a high tolerance to various functional groups, is applicable for the synthesis of 2-alkyl benzothiazoles, and is easy to set up for gram-scale reaction.
Copper-catalysed intramolecular O-arylation of aryl chlorides and bromides: a straightforward approach to benzo[d]oxazoles in water
Barbero, Nekane,Carril, Mónica,SanMartin, Raul,Domínguez, Esther
, p. 10425 - 10432 (2008/02/12)
A general, efficient and more sustainable protocol for the copper-catalysed intramolecular O-arylation of o′-haloanilides leading to the benzo[d]oxazole core is reported. Remarkably, the optimised conditions allowed for the use of inexpensive and easily available aryl chlorides as arylating agents. Moreover, all reactions were carried out employing exclusively water as the solvent, rendering the methodology presented herein highly valuable from both environmental and economic points of view.
A 'Classical' Approach to the Synthesis of Perloline
Kasum, Bruno,Prager, Rolf H.
, p. 1455 - 1467 (2007/10/02)
An approach to the synthesis of perloline by the reaction of (2-bromophenyl)(3',4'-dimethoxyphenyl)amine with a suitably 4-substituted 2-oxo-1,2-dihydropyridine-3-carboxylic acid was unsuccessful due to the inability to form the amide bond.The diphenylamine was efficiently synthesized from the nitrone of dimethoxybenzylidene-2-bromoaniline via the oxaziridine, the thermal rearrangement of which was investigated.Conjugate additions of a diphenylamine dianion to unsaturated esters are reported.