还原胺化已广泛用于制造含碳-氮结构单元。尽管它具有多功能性,但对化学还原剂或有害氢气的需求限制了它在现代化学应用中的进一步利用。在这里,我们报告了电化学还原胺化 (ERA) 以寻求可持续的合成路线。使用 Cu 金属电极可实现约 83% 的法拉第效率。深入的电动学研究揭示了 ERA 的决速步骤和整体反应性质。通过使用氘化溶剂和额外质子源的实验,我们仔细检查了 ERA 期间质子的来源。此外,CW-EPR 分析捕获了在催化循环期间形成的自由基中间物种,促进了对 ERA 过程的机械理解。
Disulfonimide‐Catalyzed Asymmetric Reduction of
<i>N</i>
‐Alkyl Imines
作者:Vijay N. Wakchaure、Philip S. J. Kaib、Markus Leutzsch、Benjamin List
DOI:10.1002/anie.201504052
日期:2015.9.28
A chiral disulfonimide (DSI)‐catalyzedasymmetric reduction of N‐alkyl imines with Hantzsch esters as a hydrogen source in the presence of Boc2O has been developed. The reaction delivers Boc‐protectedN‐alkyl amines with excellent yields and enantioselectivity. The method tolerates a large variety of alkyl amines, thus illustrating potential for a general reductive cross‐coupling of ketones with diverse
A Copper-Catalyzed Aerobic [1,3]-Nitrogen Shift through Nitrogen-Radical 4-<i>exo</i>
-trig Cyclization
作者:Yan Li、Rui Wang、Tao Wang、Xiu-Fen Cheng、Xin Zhou、Fan Fei、Xi-Sheng Wang
DOI:10.1002/anie.201709894
日期:2017.11.27
shift catalyzed by copper diacetate under an oxygen atmosphere (1 atm) has been developed for the construction of a diverse range of indole derivatives from α,α‐disubstituted benzylamine. In this reaction, oxygen was used as a clean terminal oxidant, and water was produced as the only by‐product. Five inert bonds were cleaved, and two C−N bonds and one C−C double bond were constructed in one pot during
[EN] AZOLE-FUSED PYRIDAZIN-3(2H)-ONE DERIVATIVES<br/>[FR] DÉRIVÉS DE PYRIDAZIN-3(2H)-ONE FUSIONNÉS PAR UN AZOLE
申请人:TAKEDA PHARMACEUTICALS CO
公开号:WO2021055326A1
公开(公告)日:2021-03-25
Disclosed are compounds of Formula (1) and pharmaceutically acceptable salts thereof, wherein α, β, n, R4, R5, R6, R8, R9, R10, R11, X1, X2, X3 and X7 are defined in the specification. This disclosure also relates to materials and methods for preparing compounds of Formula (1), to pharmaceutical compositions comprising them, and to their use for treating diseases, disorders, and conditions associated with GPR139.
High regioselectivity in hydrogenolysis of bis(α-methylbenzyl)amines having a fluorine atom on aromatic ring results from retardation of hydrogenolyticcleavage at benzylic position of fluorine-sub...
[EN] SUBSTITUTED PYRAZOLO/IMIDAZOLO BICYCLIC COMPOUNDS AS PDE2 INHIBITORS<br/>[FR] COMPOSÉS BICYCLIQUES PYRAZOLO/IMIDAZOLO SUBSTITUÉS EN TANT QU'INHIBITEURS DE PDE2
申请人:MERCK SHARP & DOHME
公开号:WO2016209749A1
公开(公告)日:2016-12-29
The present invention is directed to pyrimidine carboxamide compounds of formula I which are useful as therapeutic agents for the treatment of central nervous system disorders associated with phosphodiesterase 2 (PDE2). The present invention also relates to the use of such compounds for treating neurological and psychiatric disorders, such as schizophrenia, psychosis, Parkinson's disease, Parkinson's disease dementia (PDD), or Huntington's disease, and those associated with striatal hypofunction or basal ganglia dysfunction.