Facile Synthesis and Isolation of Secondary Amines <i>via</i>
a Sequential Titanium(IV)-Catalyzed Hydroamination and Palladium-Catalyzed Hydrogenation
作者:Erica K. J. Lui、Laurel L. Schafer
DOI:10.1002/adsc.201500861
日期:2016.3.3
alkyl‐substituted secondary amines has been developed. Using a bis(amidate)bis(amido)titanium(IV) precatalyst, the hydroamination of terminal alkynes with a range of amines results in the selective formation of the anti‐Markovnikov product. The crude enamine/imine mixtures are effectively hydrogenated using palladium on carbon (Pd/C) and H2 to afford the corresponding secondary amine in excellent yields.
HETEROCYCLIC AMIDE COMPOUND, PREPARATION METHOD THEREFOR AND USE THEREOF
申请人:Shanghai Jemincare Pharmaceuticals Co., Ltd.
公开号:EP4006024A1
公开(公告)日:2022-06-01
Disclosed in the present invention are a compound shown in formula (IA), an optical isomer thereof and a pharmaceutically acceptable salt thereof, and the use of the compound as a STING agonist.
Potent and highly selective heteroaromatic inhibitors of neuronal nitric oxide synthase
申请人:Silverman B. Richard
公开号:US20080108814A1
公开(公告)日:2008-05-08
Peptidomimetic compounds as can inhibit neuronal nitric oxide synthase (nNOS) for potential treatment in neurodegenerative diseases, such as but not limited to stroke, Alzheimer's disease, Parkinson's disease, Huntington's disease.
New Approach to Substrate Activation or How Heterobimetallic Complexes {[(<i>p</i>-<i>t</i>Bu-C<sub>6</sub>H<sub>4</sub>)<sub>2</sub>CH]<sub>3</sub>M}K (M = Ca and Yb) Make Intermolecular Olefin Hydroamination and NH<sub>3</sub> Cascade Hydroamination/Hydroaminomethylation Feasible
作者:Alexander N. Selikhov、Anton V. Cherkasov、Yulia V. Nelyubina、Alexander A. Trifonov
DOI:10.1021/acscatal.3c03471
日期:2023.10.6
unprecedented catalyticactivity and 100% regioselectivity in intermolecular olefin hydroamination allowing to involve into the reaction a broad scope of substrates including ethylene (1 atm), internal C═C bonds, and a variety of primary and secondary amines. Complex 1Ca allowed for the cascade NH3 alkylation with styrene and hydroaminoalkylation involving one of styryl fragments to afford N,N-diphenethyl-1
在这里,我们报道了两种热稳定的无碱异双金属二苯甲基配合物[( p - t BuC 6 H 4 ) 2 CH] 3 M}K (M = Yb(II) 和 Ca(II)) 的合成和结构,其特征在于接触离子对的结构,其中阴离子部分由三个二苯甲基配体 η 3组成,与三个 η 6封装的 M(II) 离子和 K +阳离子配位-配位苯环。该配合物在分子间烯烃加氢胺化中表现出前所未有的催化活性和 100% 区域选择性,允许广泛的底物参与反应,包括乙烯 (1 atm)、内部 C=C 键以及各种伯胺和仲胺。络合物1Ca允许与苯乙烯进行级联NH 3烷基化和涉及苯乙烯基片段之一的氢氨基烷基化,得到N , N-二苯乙基-1,4-二苯基丁-2-胺。
Reductive N-Alkylation of Amines with Ketones Using Heterogeneous Polysilane–Palladium Catalysts under Continuous-Flow Conditions
作者:Taisei Senzaki、Yuki Saito、Shu̅ Kobayashi
DOI:10.1021/acs.orglett.4c00876
日期:——
This work reports a continuous-flow reductive N-alkylation of amines with ketones using molecular hydrogen. The reaction, performed with highly active polysilane-modified heterogeneous palladium catalysts, enables the efficient synthesis of diversely substituted amines under mild flow conditions. The developed catalyst exhibits sustained activity for 5 days (turnover number of >2400). Moreover, the