N-Heterocyclic Carbene-Catalyzed (4 + 2) Cycloaddition/Decarboxylation of Silyl Dienol Ethers with α,β-Unsaturated Acid Fluorides

2011 ◽  
Vol 133 (13) ◽  
pp. 4694-4697 ◽  
Author(s):  
Sarah J. Ryan ◽  
Lisa Candish ◽  
David W. Lupton
ChemInform ◽  
1990 ◽  
Vol 21 (19) ◽  
Author(s):  
V. G. ANDREEV ◽  
A. F. KOLOMIETS ◽  
G. A. SOKOL'SKII

1980 ◽  
Vol 45 (2) ◽  
pp. 548-558 ◽  
Author(s):  
Antonín Klásek ◽  
Petr Sedmera ◽  
Jindřich Vokoun ◽  
Anna Boeva ◽  
Svatava Dvoráčková ◽  
...  
Keyword(s):  
H Nmr ◽  

From S. nemorensis L., var. subdecurrens GRISEB. there were isolated the previously obtained alkaloids nemorensine (I), retroisosenine (II), bulgarsenine (III) and, in addition, the alkaloid oxynemorensine which was assigned the structure VIII on the basis of the interpretation of the 1H-NMR, 13C-NMR, mass spectra, and on that of the identification of the products of hydrolysis and reduction. Furthermore, the isolation of the cis-nemorensic acid (V) as well as that of the unsaturated acid IV, and the transformation of bulgarsenine (III) to nemorensine (I) were described.


2021 ◽  
Author(s):  
Ardalan Hayatifar ◽  
Emily Elifritz ◽  
Molly Bloom ◽  
Kaitlyn Pixley ◽  
Chris Fennell ◽  
...  

Amide functional groups are an essential linkage that are found in peptides, proteins, and pharmaceuticals and new methods are constantly being sought for their formation. Here, a new method is...


ChemInform ◽  
2010 ◽  
Vol 41 (35) ◽  
pp. no-no
Author(s):  
Fedor I. Zubkov ◽  
Inga K. Airiyan ◽  
Anastasiya A. Dzyubenko ◽  
Nataliya I. Yudina ◽  
Vladimir P. Zaytsev ◽  
...  

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