diels alder
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2022 ◽  
Vol 520 ◽  
pp. 230805
Author(s):  
Sandip Maurya ◽  
Ehren Baca ◽  
Karteek K. Bejagam ◽  
Harry Pratt ◽  
Travis Anderson ◽  
...  

2022 ◽  
Author(s):  
Shogo Kamo ◽  
Hitomi Kurosawa ◽  
Akinobu Matsuzawa ◽  
Kazuyuki Sugita

2022 ◽  
pp. 2100777
Author(s):  
Xiwei Xu ◽  
Songqi Ma ◽  
Sheng Wang ◽  
Binbo Wang ◽  
Hongzhi Feng ◽  
...  

2022 ◽  
Author(s):  
Rafael Gomes ◽  
Juliana Pereira ◽  
João Ravasco ◽  
João Vale ◽  
Fausto Queda

The Diels-Alder (DA) reaction of biomass derived furans is an emerging technology for the preparation of new molecular entities and “drop-in” commodity chemicals. In this work we address the challenge of the direct use of electron-poor furanic platforms as dienes through the use of an unexplored chitin derived furan, 3-acetamido-5-acetylfuran (3A5AF). The 3-acetamido group promoted a remarkable increase in the kinetics of the DA allowing for the preparation of 7-oxanorbornenes (7-ONB) at 50 ºC. Partial hydrolysis of the enamide to hemi-acylaminals was possible upon fine tuning of the reaction conditions, disabling retro-DA processes. Finally, DA reaction of the reduced form of 3A5AF allowed quantitative formation of 7-ONB in aqueous condition after 10 minutes. Certanly these are the first steps for expanding the toolbox of chitin derived 3A5AF as diene.


Author(s):  
Fukai Xie ◽  
Xiang Li ◽  
Liangyu Xu ◽  
Jun Ma ◽  
Lei Sun ◽  
...  
Keyword(s):  

Author(s):  
Vera Vil' ◽  
Sergei Grishin ◽  
Elena Baberkina ◽  
Anna Alekseenko ◽  
Alexey Glinushkin ◽  
...  

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