Synthesis of 2‐(Arylthio)indolenines via Chemoselective Arylation of Thio‐Oxindoles with Arynes
作者:Adi Saputra、Rong Fan、Tuanli Yao、Jian Chen、Jiajing Tan
DOI:10.1002/adsc.202000308
日期:2020.7.16
A chemoselective S‐ arylation reaction of thio‐oxindoles with arynes is presented. The reaction was performed under mild conditions and provided a straightforward synthesis of 2‐(arylthio)indolenines in good to excellent yields. Besides, this simple operational protocol is not only scalable but also has good functional group compatibilities and substrate scope. Thus, our protocol should allow for the
Advanced palladium free approach to the synthesis of substituted alkene oxindoles <i>via</i> aluminum-promoted Knoevenagel reaction
作者:Daria S. Novikova、Tatyana A. Grigoreva、Andrey A. Zolotarev、Alexander V. Garabadzhiu、Vyacheslav G. Tribulovich
DOI:10.1039/c8ra07576j
日期:——
A synthetic route for the synthesis of C24, as well as for the design of focused libraries of direct AMPK activators was developed based on a convergent strategy. The proposed scheme corresponds to the current trends in C–H bond functionalization. The use of aluminum isopropoxide for the Knoevenagel condensation of oxindole with benzophenones is a noticeable point of this work.
Stereoselective Synthesis of 3-Alkylideneoxindoles by Rhodium-Catalyzed Cyclization Reaction of 2-Alkynylaryl Isocyanates with Aryl- and Alkenylboronic Acids
The rhodium-catalyzed cyclization reaction of 2-alkynylaryl isocyanates with aryl- and alkenylboronic acids furnishes 3-alkylideneoxindoles in a stereoselective manner. The reaction allows arrangement of various substituents on the exocyclic double bond and aromatic ring with wide functional tolerance.
Ru-Catalyzed dehydrogenative synthesis of antimalarial arylidene oxindoles
作者:Girish Singh Bisht、Akanksha M. Pandey、Moreshwar B. Chaudhari、Sandip G. Agalave、Abhishek Kanyal、Krishanpal Karmodiya、Boopathy Gnanaprakasam
DOI:10.1039/c8ob01852a
日期:——
2-oxindoles using diaryl methanols in the absence of an acceptor. A wide array of symmetrical and unsymmetrical diaryl methanols undergoes dehydrogenative coupling with 2-oxindole selectively to generate various substituted 3-(diphenylmethylene)indolin-2-one derivatives in good yields and produces environmentally benign by-products, H2 and H2O. This methodology was successfully applied for the synthesis of