Alkylative Amination of Biogenic Furans through Imine-to-Azaallyl Anion Umpolung
摘要:
Starting from biogenic furfurals, an operationally simple and scalable condensation-umpolung-alkylation protocol was employed in the synthesis of racemic furfurylamines. Subsequent enzymatic kinetic resolution by -transaminase or lipase biocatalysts allows for the preparation of functionalized heterocyclic building blocks from biogenic base chemicals in optically pure form.
A New Asymmetric Synthesis of (S)-Dolaphenine and Its Heteroaromatic Congeners Utilizing (+)-2-Hydroxy-3-pinanone and (−)-3-Hydroxy-2-caranone as Chiral Auxiliaries
作者:Naoko Irako、Yasumasa Hamada、Takayuki Shioiri
DOI:10.1016/0040-4020(95)00828-v
日期:1995.11
(+)-2-Hydroxy-3-pinanone ((+)-HyPN, (+)-2a) and (-)-3-hydroxy-2-caranone ((-)-2b) were respectively converted to the corresponding Schiff bases 18a and 18b with 1-(2-thiazolyl)methyiamine (17). Alkylation followed by removal of the chiral auxiliaries (+)-2a and (-)-2b afforded (S)-dolaphenine (10) as an optically pure form. The method was applied to the asymmetric synthesis of the dolaphenine analogs 27a-d.
Compounds of the formula
or a pharmaceutically acceptable salt thereof or a tautomer thereof, wherein A and B are as described herein, are useful for treating conditions afflicting mammals.
该公式化合物或其药用盐或其互变异构体,其中A和B如本文所述,可用于治疗影响哺乳动物的疾病。
[EN] PROCESS FOR THE PRODUCTION OF FURANIC COMPOUNDS COMPRISING AT LEAST ONE AMINE FUNCTION<br/>[FR] PROCÉDÉ POUR LA PRODUCTION DE COMPOSÉS FURANIQUES COMPRENANT AU MOINS UNE FONCTION AMINE
申请人:RHODIA OPERATIONS
公开号:WO2014198057A1
公开(公告)日:2014-12-18
Disclosed is a process for the production of furanic compound comprising at least one amine function, comprising reacting a furanic compound having at least one hydroxyl function or at least one aldehyde function with a second reactant having an amine function, in the presence of an iridium catalyst.
SNAr or Sulfonylation? Chemoselective Amination of Halo(het)arene Sulfonyl Halides for Synthetic Applications and Ultralarge Compound Library Design
作者:Vasyl Naumchyk、Vladyslav A. Andriashvili、Dmytro S. Radchenko、Dmytro Dudenko、Yurii S. Moroz、Andrey A. Tolmachev、Serhii Zhersh、Oleksandr O. Grygorenko
DOI:10.1021/acs.joc.3c02636
日期:2024.3.1
The chemoselectivity of halo(het)arene sulfonyl halide aminations is studied thoroughly under parallel synthesis conditions, and the scope and limitations of the method are established. It is shown that SNAr-reactive sulfonyl halides typically undergo sulfonamide synthesis during the first step; the second amination is also possible provided that the SNAr-active center is sufficiently reactive. On
在平行合成条件下深入研究了卤代(杂)芳烃磺酰卤胺化物的化学选择性,并确定了该方法的范围和局限性。结果表明, SN Ar反应性磺酰卤通常在第一步中进行磺酰胺合成;如果SN Ar活性中心具有足够的反应性,则第二次胺化也是可能的。相反,带有芳基化部分的磺酰氟在适当的控制下在后一个反应中心发生选择性转化。进一步的硫-氟化物交换(SuFEx)也是可能的,这对于某些磺酰卤类特别有价值。开发的两步并行双胺化方案提供了对 66.7 亿个化合物的合成可处理 REAL 型化学空间的访问(预期合成成功率 76%)。
PROCESS FOR THE PRODUCTION OF FURANIC COMPOUNDS COMPRISING AT LEAST ONE AMINE FUNCTION