已开发出一种高效的钌 (II) 催化串联 C-C/C-N 键与芳基酰胺和 7-氮杂苯并降冰片二烯形成合成顺式稠合二氢苯并[ c ]菲啶酮。酰胺基团起导向基团和离去基团的作用,并提供了一种容易获得药学上有用的苯并[ c ]菲啶生物碱如尼替丁和法加罗宁类似物的途径。本方法与关于氮杂双环烯烃和芳族酰胺的各种官能团相容。氘标记研究提出并支持了涉及定向基团辅助 C-H 活化的反应机制。
已开发出一种高效的钌 (II) 催化串联 C-C/C-N 键与芳基酰胺和 7-氮杂苯并降冰片二烯形成合成顺式稠合二氢苯并[ c ]菲啶酮。酰胺基团起导向基团和离去基团的作用,并提供了一种容易获得药学上有用的苯并[ c ]菲啶生物碱如尼替丁和法加罗宁类似物的途径。本方法与关于氮杂双环烯烃和芳族酰胺的各种官能团相容。氘标记研究提出并支持了涉及定向基团辅助 C-H 活化的反应机制。
Synthesis, Crystal Structure and Anti-Fatigue Effects of Some Benzamide Derivatives
作者:Xianglong Wu、Wutu Fan、Yalei Pan、Yuankun Zhai、Yinbo Niu、Chenrui Li、Qibing Mei
DOI:10.3390/molecules19011034
日期:——
A series of benzamide derivatives such as 1-(1,3-benzodioxol-5-ylcarbonyl) piperidine (1-BCP) were synthesized by the reaction of substituted benzoic acids with piperidine, morpholine or pyrrolidine using a novel method. The crystals of these benzamide derivatives were obtained by recrystallization. Structures of target and intermediate compounds were determined via FT-IR, 1H-NMR and elemental analysis and X-ray crystallography of select examples. The crystal structures of these compounds have potential applications to identify the binding site for allosteric modulators of the α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptor. The anti-fatigue effects of the benzamide derivatives in weight-loaded forced swimming mice were investigated in a swimming endurance capacity test used as an indicator of fatigue. The swimming times to exhaustion were longer in the b3, d3, and e3 groups than in the caffeine group (p < 0.05). In conclusion, b3, d3 and e3 enhanced the forced swimming capacity of mice. The mechanism of the anti-fatigue effects will be studied in the future.
Ruthenium(II)‐Catalyzed CH Activation with Isocyanates: A Versatile Route to Phthalimides
作者:Suman De Sarkar、Lutz Ackermann
DOI:10.1002/chem.201404261
日期:2014.10.20
A cationic ruthenium(II)‐complex was utilized in the efficient synthesis of phthalimide derivatives by CHactivation with synthetically useful amides. The reaction proceeded through a mechanistically unique insertion of a cycloruthenated species into a CHet multiple bond of isocyanate. The novel method also proved applicable for the synthesis of heteroaromatic unsymmetric diamides as well as a potent
Synthesis of amides from acid chlorides and amines in the bio-based solvent Cyrene™
作者:Thomas W. Bousfield、Katharine P. R. Pearce、Simbarashe B. Nyamini、Athanasios Angelis-Dimakis、Jason E. Camp
DOI:10.1039/c9gc01180c
日期:——
the use of toxic solvents, such as dimethylformamide and dichloromethane. A simple aqueous work-up procedure for the removal of the high boiling solvent Cyrene™ resulted in up to a 55-fold increase in molar efficiency (Mol E.%) versus standard operating procedures. In order to rapidly compare the molar efficiency of this process against other methodologies an Excel based Mol. E% calculator was developed
Synthesis of α-Aminosilanes by 1,2-Metalate Rearrangement Deoxygenative Silylation of Aromatic Amides
作者:Lu Zhou、Jian Qiu、Cece Wang、Feng Zhang、Kai Yang、Qiuling Song
DOI:10.1021/acs.orglett.2c01041
日期:2022.5.6
An efficient nickel-catalyzed deoxygenative silylation reaction of aromaticamides with silylboranes in the presence of a Sm/SmI2 system for the construction of α-aminosilanes is described. This strategy provides a direct method for synthesizing α-aminosilanes with high efficiency and good functional group compatibility and includes readily accessible starting materials and valuable products.
Direct Prenylation of Aromatic and α,β-Unsaturated Carboxamides via Iridium-Catalyzed C−H Oxidative Addition−Allene Insertion
作者:Yong Jian Zhang、Eduardas Skucas、Michael J. Krische
DOI:10.1021/ol901759t
日期:2009.9.17
Exposure of aromatic carboxamides 1e-1m, heteroaromatic carboxamides in-1p, and alpha,beta-unsaturated carboxamides 1q-1s to 1,1-dimethylallene in the presence of the a cationic iridium complex derived from [Ir(cod)(2)]BAr4F and rac-BINAP results in direct C-H prenylation to furnish adducts 2e-2m, 2n-2p, and 2q-2s, respectively, in good isolated yields as single isomers.