Regioselective functionalization of pyrones: facile synthesis of 6-styrylpyrones via KHMDS-mediated aldol condensation

2021 ◽  
pp. 153574
Author(s):  
Ramakrishna Samala ◽  
Manas K. Basu ◽  
K. Mukkanti
Synthesis ◽  
2004 ◽  
pp. 0263-0266 ◽  
Author(s):  
Gowravaram Sabitha ◽  
G. S. Kumar Reddy ◽  
K. Bhaska Reddy ◽  
J. S. Yadav

RSC Advances ◽  
2015 ◽  
Vol 5 (87) ◽  
pp. 70949-70957 ◽  
Author(s):  
L. Chandrasekhara Rao ◽  
N. Satish Kumar ◽  
H. M. Meshram

A facile synthesis of novel functionalized imidazopyridines has been accomplished through the condensation of imidazopyridines with chromene hemiacetals or β-nitro styrenes with high regioselectivity and excellent yields in the presence of a catalytic amount of PTSA or InCl3.


2017 ◽  
Vol 79 (5) ◽  
Author(s):  
Lina Mardiana ◽  
Bayu Ardiansah ◽  
Ridla Bakri ◽  
Antonius Herry Cahyana ◽  
Yulia Anita ◽  
...  

A simple preparation of sodium impregnated on activated chicken eggshells (Na-ACE) as a solid base material for substituted chalcones synthesis is presented. After characterization using FTIR, XRD, SEM, EDS and total basicity, the catalyst was applied in Aldol condensation to produce corresponding chalcones 3a-3j. Confirmation of products structure has been done by FTIR, UV-Vis and MS instruments. Reaction can be carried out in relative short time with ethanol as the best solvent and gave the highest yield of 95 %. This research presented a facile synthesis of chalcone derivatives, the prominent class of organic compounds with interesting biological activities. 


ChemInform ◽  
2004 ◽  
Vol 35 (23) ◽  
Author(s):  
Gowravaram Sabitha ◽  
G. S. Kiran Kumar Reddy ◽  
K. Bhaska Reddy ◽  
J. S. Yadav

2018 ◽  
Vol 54 (3) ◽  
pp. 268-270 ◽  
Author(s):  
Yuki Yokouchi ◽  
Shintaro Ishida ◽  
Tsunenobu Onodera ◽  
Hidetoshi Oikawa ◽  
Takeaki Iwamoto

Various bicyclo[3.3.3]pentasiloxanes (BPSO) were successfully synthesized via regioselective functionalization at the bridgehead positions.


2013 ◽  
Vol 830 ◽  
pp. 459-462
Author(s):  
Kun Jiang ◽  
Xin Fei Dong ◽  
Xiao Feng Lu ◽  
Jun Zhi Wang ◽  
Kun Zou ◽  
...  

Hydroxylchalcone are known to act on various physiological targets. In this study, a series of nine hydroxychalcones were synthesized via the aldol condensation with the aim of obtaining bioactive small molecules. Their structures were characterized by NMR spectra. The anti-breast cancer activity evaluation indicated the monohydroxychalcones exhibited the better anti-proliferative effect than dihydroxylchalcones against MDA-MB-231 cells, and the compound3bshowed the best anti-breast cancer activities at 18 μM. The bioactive compounds might be used to develop as potential anti-breast cancer agents.


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