52548-15-9Relevant academic research and scientific papers
Ruthenium(II)-Catalyzed ortho-C-H Chalcogenation of Benzoic Acids via Weak O-Coordination: Synthesis of Chalcogenoxanthones
Mandal, Anup,Dana, Suman,Sahoo, Harekrishna,Grandhi, Gowri Sankar,Baidya, Mahiuddin
, p. 2430 - 2433 (2017)
A general protocol for direct chalcogenation of inert C-H bonds of (hetero)aromatic carboxylic acids is developed with a ruthenium(II) catalyst using readily available starting materials, offering densely substituted ortho-chalcogenyl aromatic acids in high yields (up to 96%). The strategy avoids the installation of an external directing group, use of metallic oxidants, and features operational simplicity with ample substrate scope. Synthetic application en route to biologically important chalcogenoxanthones is also demonstrated. This work represents the first example of ruthenium(II)-catalyzed direct C-H chalcogenation of benzoic acids.
Nickel-catalyzed and benzoic acid-promoted direct sulfenylation of unactivated arenes
Yang, Ke,Wang, Yuqi,Chen, Xinyong,Kadi, Adnan A.,Fun, Hoong-Kun,Sun, Hao,Zhang, Yan,Lu, Hongjian
, p. 3582 - 3585 (2015)
A nickel-catalyzed and benzoic acid-promoted direct sulfenylation of unactivated arenes using removable 2-(pyridine-2-yl)-isopropylamine as a directing group is described. This strategy provides an efficient access to valuable aryl sulfides with ample substrate scope and a high degree of functional group tolerance. This journal is
10,11-Dihydro-dibenzo(b,f)thiepin derivatives
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, (2016/03/01)
Dibenzothiepin derivatives of the general formula STR1 wherein m, n, R1, R2, R3 and X are as hereinafter set forth, And salts thereof as well as processes for their manufacture are disclosed. The end products are useful as central-depressant and neuroleptic agents.
