Approach to Isoindolinones, Isoquinolinones, and THIQs via Lewis Acid-Catalyzed Domino Strecker-Lactamization/Alkylations
作者:Sivasankaran Dhanasekaran、Arun Suneja、Vishnumaya Bisai、Vinod K. Singh
DOI:10.1021/acs.orglett.5b03331
日期:2016.2.19
A one-pot, three-component synthesis of widely substituted isoindolinones and isoquinolinones, featuring a Lewisacid-catalyzed efficient Strecker reaction and lactamization sequence, affording products in good to high yields is reported. The method has also been extended to the synthesis of tetrahydroisoquinolines (THIQs) in high yields.
asymmetric transfer hydroxymethylation of activated isoindolinones, allowing us to prepare the enantioenriched hydroxymethylated adducts in good to excellent yields (48–96%) and enantiopurities (81:19–97:3 e.r.). To increase the reaction rate without compromising the selectivity, carefully optimized formaldehyde surrogates were employed, providing a convenient source of anhydrous formaldehyde with a base-triggered
Sc(OTf)3-catalyzed three-component cascade reaction: One-pot synthesis of substituted 3-oxoisoindoline-1-carbonitrile derivatives
作者:Tingting Chen、Chun Cai
DOI:10.1016/j.catcom.2015.11.011
日期:2016.1
A facile and efficient approach for the synthesis of N-substituted 3-oxoisoindoline-1-carbonitrile derivatives has been developed, with a Sc(OTf)(3)-catalyzed three-component Strecker/Lactamization cascade reaction involving methyl 2-formylbenzoate, TMSCN and amines in ethanol at room temperature. Good to excellent yields for a broad scope of amine substrates were achieved. (C) 2015 Published by Elsevier B.V.
BAUM, JONATHAN S.;STAVESKI, MARK M., SYNTH. COMMUN., 19,(1989) N3-14, C. 2283-2291