报道了酰胺催化加氢硼化以将其脱氧为胺的第一个实例。该转化采用了富含地球的镁基催化剂。叔酰胺和仲酰胺在频哪醇硼烷(HBpin)和催化量的To M MgMe(To M =三(4,4-二甲基-2-恶唑啉基)苯基硼酸酯)存在下于室温还原为胺。如催化实验中底物和HBpin的浓度和添加顺序的影响所揭示的,在该系统中催化剂的引发和形成是复杂的。由To M MgMe和HBpin形成的To M MgH 2 Bpin被排除为可能的催化相关物种,因为它与N发生了反应,N-二甲基苯甲酰胺,分别通过C–N和C–C键裂解途径提供Me 2 NBpin和PhBpin。在该反应中,仅以低收率形成催化产物苄基二甲基胺。或者,To M MgMe与N,N-二甲基苯甲酰胺的反应在24小时内缓慢分解为To M MgMe,并且该相互作用也被排除为催化相关步骤。总之,这些数据表明,To M MgMe的催化活化需要HBpin和酰胺,以及To
Fast continuous alcohol amination employing a hydrogen borrowing protocol
作者:Ricardo Labes、Carlos Mateos、Claudio Battilocchio、Yiding Chen、Paul Dingwall、Graham R. Cumming、Juan A. Rincón、Maria José Nieves-Remacha、Steven V. Ley
DOI:10.1039/c8gc03328e
日期:——
A continuous flow method for the direct conversion of alcohols to amines via a hydrogen borrowing approach is reported. The method utilises a low loading (0.5%) of a commercial catalyst system ([Ru(p-cymene)Cl2]2 and DPEPhos), reagent grade solvent and is selective for primary alcohols. Successful methylation of amines using methanol and the direct dimethylamination of alcohols using commercial dimethylamine
Frustrated Lewis Pair Catalyzed Hydrogenation of Amides: Halides as Active Lewis Base in the Metal-Free Hydrogen Activation
作者:Nikolai A. Sitte、Markus Bursch、Stefan Grimme、Jan Paradies
DOI:10.1021/jacs.8b12997
日期:2019.1.9
reductant is introduced. The reaction proceeds via the hydrogen splitting by B(2,6-F2-C6H3)3 in combination with chloride as the Lewisbase. Density functional theory calculations support the unprecedented role of halides as active Lewisbase components in the frustratedLewispair mediated hydrogen activation. The reaction displays broad substrate scope for tertiary benzoic acid amides and α-branched carboxamides
Ruthenium Catalyzed <i>N</i>
-Alkylation of Cyclic Amines with Primary Alcohols
作者:Risto Savela、Dieter Vogt、Reko Leino
DOI:10.1002/ejoc.202000167
日期:2020.5.29
A robust alcohol amination protocol using common saturated cyclic amines and primary alcohols as starting material is described for synthesis of 29 compounds. The reactions are catalyzed by combination of dichloro(p ‐cymene)ruthenium(II) dimer precatalyst with triphenylphosphine ligand. The catalyst can be precipitated by addition of hexane or cold diethyl ether, followed by isolation of the product
Magnesium-Catalyzed Mild Reduction of Tertiary and Secondary Amides to Amines
作者:Nicole L. Lampland、Megan Hovey、Debabrata Mukherjee、Aaron D. Sadow
DOI:10.1021/acscatal.5b01038
日期:2015.7.2
information on catalyst activation in hand, tertiary amides are selectively reduced to amines in good yield when catalytic amounts of ToMMgMe are added to a mixture of amide and excess HBpin. In addition, secondary amides are reduced in the presence of 10 mol % ToMMgMe and 4 equiv of HBpin. Functional groups such as cyano, nitro, and azo remain intact under the mild reaction conditions. In addition, kinetic experiments
报道了酰胺催化加氢硼化以将其脱氧为胺的第一个实例。该转化采用了富含地球的镁基催化剂。叔酰胺和仲酰胺在频哪醇硼烷(HBpin)和催化量的To M MgMe(To M =三(4,4-二甲基-2-恶唑啉基)苯基硼酸酯)存在下于室温还原为胺。如催化实验中底物和HBpin的浓度和添加顺序的影响所揭示的,在该系统中催化剂的引发和形成是复杂的。由To M MgMe和HBpin形成的To M MgH 2 Bpin被排除为可能的催化相关物种,因为它与N发生了反应,N-二甲基苯甲酰胺,分别通过C–N和C–C键裂解途径提供Me 2 NBpin和PhBpin。在该反应中,仅以低收率形成催化产物苄基二甲基胺。或者,To M MgMe与N,N-二甲基苯甲酰胺的反应在24小时内缓慢分解为To M MgMe,并且该相互作用也被排除为催化相关步骤。总之,这些数据表明,To M MgMe的催化活化需要HBpin和酰胺,以及To
[EN] BENZYL MORPHOLINE DERIVATIVES<br/>[FR] DERIVES DE LA BENZYL MORPHOLINE
申请人:LILLY CO ELI
公开号:WO2004018440A1
公开(公告)日:2004-03-04
A compound of formula (I) (I)wherein R is H; Ar is an aromatic group selected from phenyl; X is a phenyl group; R' is H or C1-C4 alkyl; each R1 is independently H or C1-C4 alkyl; and pharmaceutically acceptable salts thereof.