Regiospecific Three-Component Access to Fluorescent 2,4-Disubstituted Quinolines via One-Pot Coupling-Addition-Cyclocondensation-Sulfur Extrusion Sequence
作者:Sven Rotzoll、Benjamin Willy、Jan Schönhaber、Frank Rominger、Thomas J. J. Müller
DOI:10.1002/ejoc.201000212
日期:——
4-Di- and 2,4,7-trisubstituted quinolines are readily synthesized in a regioselective fashion from acyl chlorides, terminal alkynes, and 2-aminothiophenols by a consecutive, microwave-assisted one-potthree-component Sonogashira coupling-Michael addition-cyclocondensation sequence and following sulfur extrusion in moderate to good yields. The terminal sulfur extrusion step was studied by DFT computations
Efficient and environmentally-benign three-component synthesis of quinolines and bis-quinolines catalyzed by recyclable potassium dodecatungstocobaltate trihydrate under microwave irradiation
作者:Salma Anvar、Iraj Mohammadpoor-Baltork、Shahram Tangestaninejad、Majid Moghadam、Valiollah Mirkhani、Ahmad Reza Khosropour、Reza Kia
DOI:10.1039/c2ra20639k
日期:——
Microwave-assisted one-pot three-component reaction between aromatic amines, aromaticaldehydes and phenylacetylene is accomplished efficiently in the presence of catalytic amounts of potassium dodecatungstocobaltate trihydrate (K5CoW12O40·3H2O) to afford the corresponding quinolines and bis-quinolines in excellent yields. Selective conversion of aromaticaldehyde and also arylacetylene to their corresponding
微波辅助一锅三元反应的芳香胺,芳香醛和 苯乙炔在催化量的十二水合十二碳五烯酸钴钾三水合物(K 5 CoW 12 O 40 ·3H 2 O)的存在下有效地完成了上述反应,从而以优异的产率提供了相应的喹啉和双喹啉。在脂肪族醛和烷基乙炔的存在下,芳族醛以及芳基乙炔分别选择性地转化为它们相应的喹啉可以被认为是该方法的显着优点,并且使其成为合成喹啉衍生物的有用且有吸引力的方法。该催化剂可以重复使用数个循环而不会显着降低其催化活性。
Zn(OTf) 2 -mediated C H activation: An expeditious and solvent-free synthesis of aryl/alkyl substituted quinolines
作者:Prashant B. Sarode、Sandeep P. Bahekar、Hemant S. Chandak
DOI:10.1016/j.tetlet.2016.10.113
日期:2016.12
Zinc(II) triflate catalyzed three-component coupling reactions of alkynes, amines and aldehydes leading to the formation of aryl/alkyl substitutedquinolines has been described. Notably, the reaction proceeded efficiently and effectively without the use of ligand, co-catalyst, solvent or inert atmosphere. This robust solvent-free process operates under an ambient atmosphere and avoids the use of precious