Gold-catalyzed tandem cycloisomerization/Petasis–Ferrier rearrangement: a direct route to 3-alkoxyindanones from enynals and alcohols

RSC Advances ◽  
2015 ◽  
Vol 5 (125) ◽  
pp. 103155-103158 ◽  
Author(s):  
Ziping Cao ◽  
Huaqing Zhang ◽  
Xiaoxiang Zhang ◽  
Ludan Zhang ◽  
Xin Meng ◽  
...  

A method to prepare 3-alkoxyindanones by gold-catalyzed tandem cycloisomerization/Petasis–Ferrier rearrangement of ortho-ethynylarylaldehydes with alcohols is described. The reaction also offers a synthetic route to 3-alkoxylcyclopentenones.

ChemInform ◽  
2016 ◽  
Vol 47 (17) ◽  
Author(s):  
Ziping Cao ◽  
Huaqing Zhang ◽  
Xiaoxiang Zhang ◽  
Ludan Zhang ◽  
Xin Meng ◽  
...  

Author(s):  
Yamin Wang ◽  
Gareth Pritchard ◽  
Marc Kimber

Synthetic route for the synthesis of tetrasubstituted furan fatty acids; including experimental details, characterisation, and spectral data of all intermediates.


2018 ◽  
Author(s):  
Guangbin Dong ◽  
Renhe Li

Herein, we describe our initial development of an asymmetric Pd-catalyzed annulation between aryl iodides and racemic epoxides for synthesis of 2,3-dihydrobenzofurans using a chiral norbornene cocatalyst. A series of enantiopure ester-, amide- and imide-substituted norbornenes have been prepared with a reliable synthetic route. Promising enantioselectivity (42-45% ee) has been observed using the isopropyl ester-substituted norbornene (N1*) and the amide-substituted norbornene (N7*).


Author(s):  
Cosmas Chinweike Eze ◽  
Mercy Amarachukwu Ezeokonkwo ◽  
Benjamin Ebere Ezema ◽  
Abraham Efeturi Onoabedje ◽  
David Izuchukwu Ugwu

: Coumarin, sulphonamide and amide scaffolds exhibit diverse pharmacological features and constitute an important class of therapeutic agents. In this review, we have discussed the synthesis, biological properties, and SAR of coumarins containing sulphonamide or amide group in the last seven years. Many reviews on the therapeutic activities of coumarins, sulphonamides, and amides have been published, hence the authors focused on coumarin-linked sulphonamide or amide scaffolds. The review provides information on the synthetic route to new coumarins containing sulphonamide or amide groups with improved pharmacological properties.


2019 ◽  
Vol 19 (17) ◽  
pp. 1392-1406
Author(s):  
Suvarna G. Kini ◽  
Ekta Rathi ◽  
Avinash Kumar ◽  
Varadaraj Bhat

Diphenyl ethers (DPE) and its analogs have exhibited excellent potential for therapeutic and industrial applications. Since the 19th century, intensive research is perpetuating on the synthetic routes and biological properties of DPEs. Few well-known DPEs are Nimesulide, Fenclofenac, Triclosan, Sorafenib, MK-4965, and MK-1439 which have shown the potential of this moiety as a lead scaffold for different pharmacological properties. In this review, we recapitulate the diverse synthetic route of DPE moiety inclusive of merits and demerits over the classical synthetic route and how this moiety sparked an interest in researchers to discern the SAR (Structure Activity Relationship) for the development of diversified biological properties of DPEs such as antimicrobial, antifungal, antiinflammatory & antiviral activities.


2018 ◽  
Vol 15 (3) ◽  
Author(s):  
Ahmad Fakhruddin ◽  
Abdel-Moneim Abu-Elfotoh ◽  
Kazutaka Shibatomi ◽  
Seiji Iwasa

2019 ◽  
Vol 16 (6) ◽  
pp. 447-453 ◽  
Author(s):  
Leticia Lafuente ◽  
María Florencia Rochetti ◽  
Rodolfo Bravo ◽  
Leandro Sasiambarrena ◽  
Cintia C. Santiago ◽  
...  

Cu-Fe spinels promoted the Ferrier rearrangement of 2-nitroglycals with several O-nucleophiles. 2,3-Unsaturated carbohydrate derivatives were prepared by the reaction of 3,4,6-tri-Oacetyl- 2-nitroglucal and alcohols in the presence of 5 % of CuFe2O4. After separation of the catalyst with an external magnet, the reaction products were obtained in good yields and high stereo and regioselectivity. Also, S- and heterocyclic C-3 substituted 2-nitro-endo-glycals could be prepared by this method.


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