Direct use of dioxygen as an oxygen source: catalytic oxidative synthesis of amides
作者:Wei Wei、Xiao-Yu Hu、Xiao-Wei Yan、Qiang Zhang、Ming Cheng、Jian-Xin Ji
DOI:10.1039/c1cc14640h
日期:——
The first transition-metal-catalyzed directoxidative synthesis of amides by usingdioxygen as an oxygen source has been developed under mild conditions, in which DBU was used as the key additive. The present methodology, which utilizes dioxygen as an oxidant and oxygen source and cheap copper salts as catalysts, opens up an interesting and attractive avenue for the synthesis of amide functionality
Intermediates useful for synthesis of cephalosporins are disclosed, which intermediates are concerned with 1,2,3-thiadiazole-4-thiolates and the preparation of such thiolates.
Intermediates useful for synthesis of cephalosporins are disclosed, which intermediates are concerned with 1,2,3-thiadiazole-4-thiolates and the preparation of such thiolates.
The present invention is directed to certain hydropyranopyrrolidine compounds which are useful as neurokinin-1 (NK-1) receptor antagonists, and inhibitors of tachykinin and in particular substance P. The invention is also concerned with pharmaceutical formulations comprising these compounds as active ingredients and the use of the compounds and their formulations in the treatment of certain disorders, including emesis, urinary incontinence, depression, and anxiety.
The present invention is directed to certain hydropyranopyrrolidine compounds which are useful as neurokinin-1 (NK-1) receptor antagonists, and inhibitors of tachykinin and in particular substance P. The invention is also concerned with pharmaceutical formations comprising these compounds as active ingredients and the use of the compounds and their formulations in the treatment of certain disorders, including emesis, urinary incontinence, depression, and anxiety.