Diastereoselective Synthesis of Dihydro-quinolin-4-ones by a Borane-Catalyzed Redox-Neutral endo-1,7-Hydride Shift

2021 ◽  
Author(s):  
Garrit Wicker ◽  
Roland Schoch ◽  
Jan Paradies
2018 ◽  
Vol 9 (37) ◽  
pp. 7327-7331 ◽  
Author(s):  
Keiji Mori ◽  
Nobuaki Umehara ◽  
Takahiko Akiyama

Highly diastereoselective synthesis of tricyclic fused-pyrans was achieved by Brønsted acid catalyzed double C(sp3)–H bond functionalization.


2019 ◽  
Vol 21 (7) ◽  
pp. 2383-2387 ◽  
Author(s):  
Risa Tamura ◽  
Eriko Kitamura ◽  
Ryosuke Tsutsumi ◽  
Masahiro Yamanaka ◽  
Takahiko Akiyama ◽  
...  

2019 ◽  
Vol 23 (16) ◽  
pp. 1778-1788 ◽  
Author(s):  
Gurpreet Kaur ◽  
Arvind Singh ◽  
Kiran Bala ◽  
Mamta Devi ◽  
Anjana Kumari ◽  
...  

A simple, straightforward and efficient method has been developed for the synthesis of (E)-3-(arylimino)indolin-2-one derivatives and (E)-2-((4-methoxyphenyl)imino)- acenaphthylen-1(2H)-one. The synthesis of these biologically-significant scaffolds was achieved from the reactions of various substituted anilines and isatins or acenaphthaquinone, respectively, using commercially available, environmentally benign and naturally occurring organic acids such as mandelic acid or itaconic acid as catalyst in aqueous medium at room temperature. Mild reaction conditions, energy efficiency, good to excellent yields, environmentally benign conditions, easy isolation of products, no need of column chromatographic separation and the reusability of reaction media are some of the significant features of the present protocol.


2012 ◽  
Vol 9 (2) ◽  
pp. 81-88 ◽  
Author(s):  
Ervin Kovacs ◽  
Ferenc Farkas ◽  
Angelika Thurner ◽  
Aron Szollosy ◽  
Ferenc Faigl

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