Highly Efficient and Catalytic Conversion of Aldoximes to Nitriles
摘要:
[GRAPHICS]Catalytic dehydration of aldoximes can be performed highly efficiently with a catalyst system of [RuCl2(p-cymene)](2)/molecular sieves under essentially neutral and mild conditions, and various types of cyano compounds are produced in good to excellent yields.
Continuous Platform To Generate Nitroalkanes On-Demand (in Situ) Using Peracetic Acid-Mediated Oxidation in a PFA Pipes-in-Series Reactor
作者:Sergey V. Tsukanov、Martin D. Johnson、Scott A. May、Stanley P. Kolis、Matthew H. Yates、Jeffrey N. Johnston
DOI:10.1021/acs.oprd.8b00113
日期:2018.8.17
of peroxides and nitroalkanes. The subsequent continuous extraction generates a solution of purified nitroalkane, which can be directly used in the following enantioselective aza-Henry chemistry to furnish valuable chiral diamine precursors with high selectivity, thus completely avoiding isolation of the potentially unsafe low-molecular-weight nitroalkane intermediate. A continuous campaign (16 h) established
[EN] IMIDAZOPYRROLOPYRIDINE AS INHIBITORS OF THE JAK FAMILY OF KINASES<br/>[FR] IMIDAZOPYRROLOPYRIDINE EN TANT QU'INHIBITEURS DE LA FAMILLE JAK DE KINASES
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2018112382A1
公开(公告)日:2018-06-21
2-((1r,4r)-4-(imidazo[4,5-d]pyrrolo[2,3-b]pyridin-1(6H)-yl)cyclohexyl)acetonitrile compounds, pharmaceutical compositions containing them, methods of making them, and methods of using them including methods for treating disease states, disorders, and conditions mediated by JAK, such as inflammatory bowel disease.
of substituted beta-aminoxypropionic acids (AOPAs) were synthesized as analogues of antiinflammatory arylacetic acids (ArAAs), in which the Ar portion is substituted by the MAOMM, with the aim of evaluating whether any antiinflammatoryactivity could be obtained from this class of drugs after the substitution of the Ar with the MAOMM. The antiinflammatoryactivity of the AOPAs synthesized was determined
A Versatile Strategy for the Synthesis of 4,5-Dihydroxy-2,3-Pentanedione (DPD) and Related Compounds as Potential Modulators of Bacterial Quorum Sensing
in both Gram-negative and Gram-positive bacteria. In this study, a practical and versatile synthesis of racemic DPD is presented. Compared to previously reported syntheses, the proposed strategy is short and robust: it requires only one purification step and avoids the use of expensive or hazardous startingmaterials as well as the use of specific equipment. It is therefore well suited to the synthesis
Reaction of difluorocarbene with anions from amides and oximes: Synthesis of N-difluoromethyl substituted amides, O-difluoromethylimidates or O-difluoromethyl substituted oximes under phase-transfer catalysis conditions
作者:Ewelina Nawrot、Andrzej Jończyk
DOI:10.1016/j.jfluchem.2006.04.006
日期:2006.7
N-Aryl substitutedamides react with chlorodifluoromethane in the presence of concentrated aqueous sodium hydroxide and benzyltriethylammonium chloride (TEBAC) as a catalyst in benzene (phase-transfer catalysis, PTC), affording mixtures of N- and O-difluoromethyl substituted derivatives. Amide anions are involved in this process. The reaction carried out with oximes gives O-difluoromethyl oxime ethers