Synthesis of Diphenylhexatriene by the Pd-Catalyzed Dimerization of Cinnamyl Acetate
摘要:
A mild and operationally simple method to synthesize diphenylhexatriene (DPH) is reported. The method relies on the Pd-catalyzed dimerization of cinnamyl acetate and provides efficient access to DPH in a single step.
Copper-Catalyzed Transfer Hydrodeuteration of Aryl Alkenes with Quantitative Isotopomer Purity Analysis by Molecular Rotational Resonance Spectroscopy
作者:Zoua Pa Vang、Albert Reyes、Reilly E. Sonstrom、Martin S. Holdren、Samantha E. Sloane、Isabella Y. Alansari、Justin L. Neill、Brooks H. Pate、Joseph R. Clark
DOI:10.1021/jacs.1c00884
日期:2021.5.26
A copper-catalyzed alkenetransferhydrodeuteration reaction that selectively incorporates one hydrogen and one deuterium atom across an aryl alkene is described. The transferhydrodeuteration protocol is selective across a variety of internal and terminalalkenes and is also demonstrated on an alkene-containing complex natural product analog. Beyond using 1H, 2H, and 13C NMR analysis to measure reaction
Uniting C1-Ammonium Enolates and Transition Metal Electrophiles via Cooperative Catalysis: The Direct Asymmetric α-Allylation of Aryl Acetic Acid Esters
作者:Kevin J. Schwarz、Jessica L. Amos、J. Cullen Klein、Dung T. Do、Thomas N. Snaddon
DOI:10.1021/jacs.6b01694
日期:2016.4.27
constitutes a significant challenge in the area of asymmetric catalysis, particularly where the configurational integrity of the products is problematic. Through the unprecedented merger of two independent, yet complementary, catalysis events it has been possible to facilitate the direct asymmetric α-allylation of readily available aryl aceticacid esters. Since enantioselection is determined by the nucleophile
Ni-Catalyzed Stannylation of Aryl Esters via C−O Bond Cleavage
作者:Yiting Gu、Rúben Martín
DOI:10.1002/anie.201611720
日期:2017.3.13
Ni‐catalyzed stannylation of aryl esters with air‐ and moisture‐insensitive silylstannyl reagents via C −Ocleavage is described. This protocol is characterized by its wide scope, including challenging combinations, thus enabling access to versatile building blocks and orthogonal C−heteroatom bond formations.
Herein we report a novel Cu-catalyzed regioselective C2–H alkylation of benzimidazoles with aromatic alkenes. The reaction features exclusive regioselectivity and broad substrate scope in the intermolecular alkylation of benzimidazoles with terminal and internal aromatic alkenes, constituting a modular access toward benzimidazole-containing 1,1-di(hetero)aryl alkanes. The intramolecular C2–H alkylation
Ruthenium-Catalyzed Cross-Metathesis of Allyl Acetate and Styrenes: A Practical Approach to the Synthesis of Tripolinolate A and Its Analogs
作者:Yasuhiro Araki、Nikola Topolovčan、Martin Kotora
DOI:10.1002/ejoc.201700132
日期:2017.4.3
structurally divergent styrenes were tolerated, and the resultant products were obtained in reasonable yields. The reported method was utilized in the synthesis of inhibitors of the proliferation of glioma and colorectal cancer cells, tripolinolate A and its diacetate analog.
探索了 Ru 催化的乙酸烯丙酯和苯乙烯交叉复分解的范围。可以容忍各种电子和结构不同的苯乙烯,并以合理的产率获得所得产物。所报道的方法用于合成胶质瘤和结直肠癌细胞增殖抑制剂、三萜醇酯 A 及其二乙酸酯类似物。