A simple and convenient method for the chemoselective reduction of nitriles into aldehydes using a 1,1,3,3-tetramethyldisiloxane (TMDS)/triisopropoxyvanadium(V) oxide reducingsystem is described. Aromatic as well as aliphatic nitriles are reduced into the corresponding aldehydes in moderate to good yields.
The present invention relates to
wherein each symbol is as defined in the specification. The compound has a superior mineralocorticoid receptor antagonistic action and is useful as an agent for the prophylaxis or treatment of a disease or condition mediated by the mineralocorticoid receptor activation.
The continuous-flow synthesis of carbazate hydrazones using a simplified computer-vision controlled liquid–liquid extraction system
作者:Matthew O’Brien、Dennis A. Cooper、Panashe Mhembere
DOI:10.1016/j.tetlet.2016.10.018
日期:2016.11
A computer-vision controlled liquid–liquidextractionsystem was used in the continuous-flow synthesis of a series of carbazate hydrazones. The systemuses open-source software components (Python, OpenCV) and is simpler and potentially more economical, in terms of hardware, than one we have described previously.
Synthesis of 5-aryl-3H-[1,3,4]oxadiazol-2-ones from N′-(chloro-aryl-methylene)-tert-butylcarbazates using basic alumina as an efficient and recyclable surface under solvent-free condition
The synthesis of biologically important 5-aryl-3H-[1,3,4]oxadiazol-2-ones has been carried out by heating the easily synthesized N'-(chloro-aryl-methylene)-tert-butylcarbazates on basic alumina surface under solvent-free condition. The dual characteristic of basic alumina as a solid support as well as a nucleophile is successfully exploited in these reactions. The method provides special attributions such as reduced reaction times, easier work-up procedures, and good to excellent yields as well as increased purity of products and most importantly environmentally friendly protocols. The basic alumina is easily recovered and utilized for further reactions several times without serious loss of activity. (C) 2012 Elsevier Ltd. All rights reserved.