derivatives to form fluorinated analogues. All reactions proceed rapidly and under mild conditions. The use of a catalytic amount of 1 and KF in toluene led to a relatively high yield of a selected fluoroformate.
2-[(CH 3)2 NCH 2 ] C 6 H 4 }(n- Bu)2 SnF(1)与各种氯甲酸酯,酰氯,甲磺酰氯,4,4'-二甲氧基三苯甲基氯和光气前体或衍生物反应形成氟化类似物。所有反应均在温和条件下快速进行。在甲苯中使用催化量的1和KF导致选择的氟甲酸酯的产率较高。
An expedient synthesis of cyanoformates via DAST-mediated C C bond cleavage of α-oximino-β-ketoesters
作者:Danhee Kim、Hee Nam Lim
DOI:10.1016/j.tetlet.2021.153116
日期:2021.6
A new protocol to synthesize cyanoformates was developed using simple β-ketoesters as substrates. (Diethylamino)sulfur trifluoride (DAST) was used as a dual-role reagent to activate the oxime moiety and to donate a fluoride. The key intermediates, α-oximino-β-ketoesters, were prepared by highly efficient acid-assisted oximation of β-ketoesters. Then, the deconstruction of α-oximino-β-ketoesters by
使用简单的β-酮酯作为底物开发了一种合成氰基甲酸酯的新方案。(二乙氨基)三氟化硫 (DAST) 用作双重作用试剂以激活肟部分并提供氟化物。关键中间体,α -oximino- β酮酯中,通过高效的酸辅助肟化制备β酮酯。然后,证明了通过氟化 C C 键断裂对α-肟基-β-酮酯的解构提供了氰甲酸酯。在这种情况下,氟化物添加后 CC 键断裂选择性地发生在酮中而不是酯中。由于简单和温和的反应条件,举例说明了各种功能化的氰基甲酸酯。
[EN] HISTONE DEACETYLASE (HDAC) INHIBITING COMPOUNDS AND METHOD OF MAKING SAME<br/>[FR] COMPOSÉS INHIBANT L'HISTONE DÉSACÉTYLASE (HDAC) ET PROCÉDÉ DE FABRICATION DE CEUX-CI
申请人:FELIX JAEGER UND DR STEFAN DRINKUTH LABORGEMEINSCHAFT OHG DR
公开号:WO2012107304A1
公开(公告)日:2012-08-16
The invention relates to novel HDAC inhibitors and a method of making such HDAC inhibitors. The present invention provides novel HDAC inhibitors having a perfluorinated linker between the metal-binding group and the cap group.
A method for the production of aliphatic fluoroformates, wherein carbonyl fluoride is made to react with aliphatic alcohol in the presence of sodium fluoride in ether at a temperature of −20° to 50° C. The method is carried out using carbonyl fluoride obtained by reacting phosgene with surplus powdered sodium fluoride, whereby the grains thereof have a specific surface of 0.1 m
2
/g or more and/or an average diameter of 20 μm or less, at a temperature ranging from 25° to 120° C. The method enables unstable fluoroformates such as tertiobutyl to be obtained with excellent yields.
Histone deacetylase (HDAC) inhibiting compounds and method of making same
申请人:Dr. Felix Jäger und Dr. Stefan Drinkuth
Laborgemeinschaft OHG
公开号:EP2486923A1
公开(公告)日:2012-08-15
The invention relates to novel HDAC inhibitors and a method of making such HDAC inhibitors. The present invention provides novel HDAC inhibitors having a perfluorinated linker between the metal-binding group and the cap group.