The first B(C6F5)3‐catalyzed deoxygenative reduction of amides into the corresponding amines with readily accessible and stable ammonia borane (AB) as a reducing agent under mild reaction conditions is reported. This metal‐free protocol provides facile access to a wide range of structurally diverse amine products in good to excellent yields, and various functional groups including those that are reduction‐sensitive
据报道,在温和的反应条件下,用易于获得且稳定的氨硼烷(AB)作为还原剂,将酰胺进行的首次B(C 6 F 5)3催化脱氧还原为相应的胺。该无金属方案可轻松获得各种结构多样的胺产品,且收率高至优异,并且对各种官能团(包括对还原敏感的官能团)均具有良好的耐受性。该新方法也适用于手性酰胺底物,而不会破坏对映体的纯度。BF 3 OEt 2助催化剂在该反应中的作用是通过酰胺-硼加合物的原位形成来活化酰胺羰基。
[EN] ACETAMIDO DERIVATIVES AS DNA POLYMERASE THETA INHIBITORS<br/>[FR] DÉRIVÉS ACÉTAMIDO EN TANT QU'INHIBITEURS DE L'ADN POLYMÉRASE THÊTA
申请人:IDEAYA BIOSCIENCES INC
公开号:WO2020160134A1
公开(公告)日:2020-08-06
Disclosed herein are certain acetamido derivatives that are DNA Polymerase Theta (Polθ) inhibitors of Formula (I). Also, disclosed are pharmaceutical compositions comprising such compounds and methods of treating diseases treatable by inhibition of Polθ such as cancer, including homologous recombination (HR) deficient cancers.
Silver(I)‐Catalyzed
<i>N</i>
‐Trifluoroethylation of Anilines and
<i>O</i>
‐Trifluoroethylation of Amides with 2,2,2‐Trifluorodiazoethane
作者:Haiqing Luo、Guojiao Wu、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201507219
日期:2015.11.23
A straightforward N‐trifluoroethylation of anilines has been developed based on silver‐catalyzedNH insertions with 2,2,2‐trifluorodiazoethane (CF3CHN2). Mechanistically, the reaction is proposed to involve migratory insertion of a silver carbene as the key step. In contrast, when amides are employed as the substrates under similar reaction conditions, O‐trifluoroethylation occurs to afford trifluoroethyl
Palladium-Catalyzed Arylation of Fluoroalkylamines
作者:Andrew T. Brusoe、John F. Hartwig
DOI:10.1021/jacs.5b02512
日期:2015.7.8
fluoroalkylaniline products are unstable under typical conditions for C-N coupling reactions (heat and strong base). However, the reactions conducted with the weaker base KOPh, which has rarely been used in cross-coupling to form C-N bonds, occurred in high yield in the presence of a catalyst derived from commercially available AdBippyPhos and [Pd(allyl)Cl]2. Under these conditions, the reactions occur with low
[EN] PALLADIUM-CATALYZED ARYLATION OF FLUOROALKYLAMINES<br/>[FR] ARYLATION CATALYSÉE PAR LE PALLADIUM DE FLUOROALKYLAMINES
申请人:UNIV CALIFORNIA
公开号:WO2016183101A1
公开(公告)日:2016-11-17
Methods for synthesizing trifluoroethyl, difluoroethyl, pentafluoropropyl, and difluorophenethyl anilines by palladium-catalyzed coupling of fluoroalkylamines with aryl bromides and aryl chlorides are provided herein. The reaction is conducted with a weaker base such as KOPh in the presence of a catalyst derived from AdBippyPhos and [Pd(allyl)Cl]2. The reactions occur with catalyst loadings less than about 0.50 mol% and tolerate the presence of various functional groups that react with the strong bases that are typically used in Pd-catalyzed C-N cross coupling reactions of aryl halides. The resting state of the catalyst is the phenoxide complex, (BippyPhosPd(Ar)OPh); due to the electron-withdrawing property of the fluoroalkyl substituent, the turn-over limiting step of the reaction is reductive elimination to form the C-N bond.