Sodium chlorate as a viable substoichiometric oxidant for cobalt-catalyzed oxidative annulation of aryl sulfonamides with alkynes
作者:You Ran、Yudong Yang、Luoqiang Zhang
DOI:10.1016/j.tetlet.2016.06.059
日期:2016.7
for the first time as an efficient and versatile oxidant in the catalytic C–H activation reaction. By using sodium chlorate as the oxidant, a highly regioselective cobalt-catalyzed oxidativeannulation of aryl sulfonamides with alkynes has been developed and can be extended to the annulation of benzamide.
The present invention relates to novel hepcidin antagonists, pharmaceutical compositions comprising them and the use thereof as medicaments for the use in the treatment of iron metabolism disorders, such as, in particular, iron deficiency diseases and anemias, in particular anemias in connection with chronic inflammatory diseases.
Rhodium(<scp>i</scp>)-catalyzed mono-selective C–H alkylation of benzenesulfonamides with terminal alkenes
作者:Supriya Rej、Naoto Chatani
DOI:10.1039/c9cc05219d
日期:——
The Rh(I)-catalyzed ortho-alkylation of benzenesulfonamides with alkenes with the aid of an 8-aminoquinoline directing group is reported. The reaction is applicable to a variety of benzenesulfonamide derivatives and various alkenes. Curiously, unactivated 1-alkenes were more reactive than activated alkenes. Deuterium labeling experiments indicate that an unusual 1,2-H shift mechanism to generate a
Rh(<scp>ii</scp>)-catalyzed branch-selective C–H alkylation of aryl sulfonamides with vinylsilanes
作者:Supriya Rej、Naoto Chatani
DOI:10.1039/c9sc04308j
日期:——
Rhodium(II)-catalyzed unusual branch-selective ortho-C–H alkylation of aryl sulfonamides with vinylsilanes was achieved using an 8-aminoquinoline directing group. Notably, the para-substituted aryl sulfonamides gave mono-(branched)alkylated products exclusively without the formation of any double C–H alkylated byproducts. The results of deuterium labeling experiments suggest that both hydrometalation
使用 8-氨基喹啉导向基团,在铑 ( II ) 催化下,芳基磺酰胺与乙烯基硅烷发生异常支链选择性邻-C–H 烷基化反应。值得注意的是,对位取代的芳基磺酰胺仅产生单(支链)烷基化产物,而没有形成任何双C-H烷基化副产物。氘标记实验的结果表明,加氢金属化和碳金属化途径都参与了这种转化。
Sulfonaminoquinoline hepcidin antagonists
申请人:Vifor (International) AG
公开号:US09102688B2
公开(公告)日:2015-08-11
The present invention relates to novel hepcidin antagonists, pharmaceutical compositions comprising them and the use thereof as medicaments for the use in the treatment of iron metabolism disorders, such as, in particular, iron deficiency diseases and anemias, in particular anemias in connection with chronic inflammatory diseases.