已经研究了二苯甲酮吖嗪对锂的行为。与钠和钾不同,锂对二苯甲酮吖嗪有广泛的还原和裂解作用。反应产物为二苯甲基胺。通过将锂的量限制为每摩尔吖嗪 2 g 原子,根据其化学行为,反应产物显示为 N-锂硫代二苯甲酮亚胺。提出了两个原因来解释锂的行为与钠或钾。一种解释依赖于与其他两种碱金属相比,锂的还原能力更强。另一种依赖于有机锂化合物通过形成多中心键而结合的趋势。
Palladium-Catalyzed Decarboxylative Benzylation of Diphenylglycinate Imines
摘要:
General reaction conditions for the Pd-catalyzed decarboxylative benzylation of benzyl diphenylglycinate Imines are described. The overall procedure requires a simple catalyst/ligand combination to form a new CSp(3)-CSp(3) bond. Microwave irradiation greatly accelerated the transformation. Moreover, various heteroaromatic moieties are tolerated in both the imine and ester components.
Synthesis of (diarylmethyl)amines using Ni-catalyzed arylation of C(sp<sup>3</sup>)–H bonds
作者:José A. Fernández-Salas、Enrico Marelli、Steven P. Nolan
DOI:10.1039/c5sc01589h
日期:——
The first nickelcatalyzed deprotonative cross coupling between C(sp3)-H bonds and aryl chlorides is reported, allowing the challenging arylation of benzylimines in the absence of directing group or stoichiometric metal...
A unique C(sp3)–H/C(sp3)–H dehydrocoupling of N-benzylimines with saturated heterocycles is described. Using super electron donor (SED) 2-azaallyl anions and aryl iodides as electron acceptors, single-electron-transfer (SET) generates an aryl radical. Hydrogen atom transfer (HAT) from saturated heterocycles or toluenes to the aryl radical generates alkyl radicals or benzylic radicals, respectively
Synthesis of diarylmethylamines via palladium-catalyzed regioselective arylation of 1,1,3-triaryl-2-azaallyl anions
作者:Minyan Li、Baris Yücel、Javier Adrio、Ana Bellomo、Patrick J. Walsh
DOI:10.1039/c3sc53526f
日期:——
new methods for their synthesis are in demand. Herein, we report a versatile protocol for the synthesis of diarylmethylamine derivatives involving palladium-catalyzed arylation of in situ generated 2-azaallyl anion intermediates. The 2-azaallyl anions are generated by reversible deprotonation of readily available aldimine and ketimine precursors. Importantly, the arylated aldimine and ketimine products
Efficient Transamination under Mild Conditions: Preparation of Primary Amine Derivatives from Carbonyl Compounds <i>via</i> Imine Isomerization with Catalytic Amounts of Potassium <i>tert</i>-Butoxide
1,3-Prototropic rearrangement of N-diphenylmethanimines was successfully performed with a catalytic amount of potassium tert-butoxide. This procedure can also be used with aliphatic and aromatic aldimines and was extended to the isomerization of (1R)-camphorquinone monoimine and N-(4-methoxyphenyl)-4-phenyl-3-iminoazetidin-2-one. The isomerized imines were easily hydrolyzed and isolated as Cbz derivatives.
Alkali metal adducts of benzophenone azine. II. The lithium adduct
作者:E. J. MacPherson、James G. Smith
DOI:10.1139/v70-314
日期:1970.6.15
The behavior of benzophenone azine towards lithium has been studied. Unlike sodium and potassium, lithium effected extensive reduction and cleavage of benzophenone azine; the reaction product being benzhydryl amine. By limiting the amount of lithium to 2 g-atoms per mole of azine, the reaction product was shown to be N-lithiobenzophenone imine on the basis of its chemical behavior.Two reasons are advanced
已经研究了二苯甲酮吖嗪对锂的行为。与钠和钾不同,锂对二苯甲酮吖嗪有广泛的还原和裂解作用。反应产物为二苯甲基胺。通过将锂的量限制为每摩尔吖嗪 2 g 原子,根据其化学行为,反应产物显示为 N-锂硫代二苯甲酮亚胺。提出了两个原因来解释锂的行为与钠或钾。一种解释依赖于与其他两种碱金属相比,锂的还原能力更强。另一种依赖于有机锂化合物通过形成多中心键而结合的趋势。