Propylsulfonic acid grafted on mesoporous siliceous FDU-5 material: A high TOF catalyst for the synthesis of coumarins via Pechmann condensation

2020 ◽  
Vol 307 ◽  
pp. 110458
Author(s):  
Gabino Gonzalez-Carrillo ◽  
Jorge Gonzalez ◽  
Maria Jose Emparan-Legaspi ◽  
Gisela Jareth Lino-Lopez ◽  
Ismael A. Aguayo-Villarreal ◽  
...  
Keyword(s):  
Pechmann Condensation

Recent Advances in the Synthesis of Coumarin Derivatives via Pechmann Condensation

2016 ◽  
Vol 20 (7) ◽  
pp. 798-828 ◽  
Author(s):  
Abhay S. Zambare ◽  
Firoz A. Kalam Khan ◽  
Sureshchandra P. Zambare ◽  
Shantanu D. Shinde ◽  
Jaiprakash N. Sangshetti
Keyword(s):  
Coumarin Derivatives ◽  
Pechmann Condensation ◽  
Recent Advances

scholarly journals Barium Dichloride as a Powerful and Inexpensive Catalyst for the Pechmann Condensation without Using Solvent

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Saeed Khodabakhshi
Keyword(s):  
Green Chemistry ◽  
Organic Solvents ◽  
Condensation Reaction ◽  
Reaction Times ◽  
Solvent Free ◽  
Coumarin Derivatives ◽  
Inexpensive Method ◽  
Keto Esters ◽  
Pechmann Condensation ◽  
Solvent Free Conditions

Various coumarin derivatives have been efficiently synthesized via barium dichloride-catalyzed Pechmann condensation reaction of various phenols and β-keto esters under solvent-free conditions. This novel and inexpensive method has advantages such as short reaction times, excellent product yields, and avoidance of organic solvents in agreement with green chemistry principles.

The structure and function of oestrogens. III. 3,17β-Dihydroxy-6-oxaoestra-1,3,5(10),8(9)-tetraen-7-one and related steroidal coumarins

1982 ◽  
Vol 35 (4) ◽  
pp. 799 ◽  
Author(s):  
AS Caselli ◽  
DJ Collins ◽  
GM Stone
Keyword(s):  
Sodium Borohydride ◽  
Monomethyl Ether ◽  
Structure And Function ◽  
Pechmann Condensation ◽  
And Function

A Pechmann condensation of resorcinol, or resorcinol monomethyl ether with ethyl t-7a-methyl- 1,5-dioxo-r-3a,4,5,6,7,7a-hexahydroindan-c-4-carboxylate (10b) gave 3-hydroxy-6-oxaoestra- 1,3,5(10),8(9)-tetraene-7,17-dione (3a), or the corresponding 3-methoxy compound (3b), respectively. Reduction of 3-hydroxy-6-oxaoestra-1,3,5(10),8(9)-tetraene-7,17-dione (3a) with sodium borohydride gave 3,17β-dihydroxy-6-oxaoestra-1,3,5(10),8(9)-tetraen-7-one (11). Compounds (3a) and (11) were tested for oestrogenic activity.

scholarly journals In(OTf)3 as a powerful and recyclable catalyst for Pechmann condensation without solvent

2014 ◽  
Vol 35 (7) ◽  
pp. 1206-1211 ◽  
Author(s):  
Bahador Karami ◽  
Mahtab Kiani ◽  
Mohsen Ahmad Hoseini
Keyword(s):  
Recyclable Catalyst ◽  
Pechmann Condensation
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