An Expedient Regio- and Diastereoselective Synthesis of Hybrid Frameworks with Embedded Spiro[9,10]dihydroanthracene [9,3′]-pyrrolidine and Spiro[oxindole-3,2′-pyrrolidine] Motifs via an Ionic Liquid-Mediated Multicomponent Reaction
作者:Natarajan Arumugam、Abdulrahman Almansour、Raju Kumar、J. Menéndez、Mujeeb Sultan、Usama Karama、Hazem Ghabbour、Hoong-Kun Fun
DOI:10.3390/molecules200916142
日期:——
A series of hitherto unreported anthracene-embedded dispirooxindoles has been synthesized via a one-pot three-component 1,3-dipolar cycloaddition reaction of an azomethine ylide, generated in situ from the reaction of isatin and sarcosine to 10-benzylideneanthracen-9(10H)-one as a dipolarophile in 1-butyl-3-methylimidazolium bromide([bmim]Br), an ionic liquid. This reaction proceeded regio- and diastereoselectively, in good to excellent yields.
Phosphoric Acid‐Catalyzed Enantioselective Synthesis of Axially Chiral Anthrone‐based Compounds
作者:Shi‐Jiang He、Shuai Zhu、Sheng‐Qi Qiu、Wei‐Yi Ding、Jun Kee Cheng、Shao‐Hua Xiang、Bin Tan
DOI:10.1002/anie.202213914
日期:2023.1.2
By a simple stereoselective condensation with remote chirality control, axial chirality could be introduced to the symmetric anthrone backbones that comprise mostly sp2-hybridized carbons. The generated oxime ether functionality enables their transformation with axial-to-point chirality conversion via Beckmann rearrangement into enantioenriched dibenzo-fused seven-membered N-heterocycles.
Reactions of (9-anthryl)arylmethyl chloride and its homologs with nucleophiles under solvolytic conditions. Notable effects of reaction conditions and substituents on the reaction sites