Microwave-Assisted Synthesis of Pinacol Boronates from Aryl Chlorides Catalyzed by a Palladium/Imidazolium Salt System

2002 ◽  
Vol 4 (4) ◽  
pp. 541-543 ◽  
Author(s):  
Alois Fürstner ◽  
Günter Seidel
2007 ◽  
Vol 62 (10) ◽  
pp. 1317-1323 ◽  
Author(s):  
Matti J. P. Vaismaa ◽  
Sanna M. Yliniemelä ◽  
Marja K. Lajunen

An efficient, facile microwave-assisted synthesis has been developed for the preparation of unsymmetrical sulfide derivatives from 3-mercaptopropionic acid and a wide variety of alkyl, allyl or aryl chlorides or bromides. The synthesis performed in ethanol at 80 or 120 °C using sodium hydroxide as a base, selectively without an offensive smell, generates 3-(alkylthio)propionic acids in good yields. Effects of reaction components, temperature, and the heating technique on the formation of the product and side-products were studied.


2020 ◽  
Vol 57 (3) ◽  
pp. 265-272
Author(s):  
Priya S. Singh ◽  
Aizaz Shaikh ◽  
Aditi Deshmukh ◽  
Amit P. Pratap

2013 ◽  
Vol 17 (20) ◽  
pp. 2279-2304 ◽  
Author(s):  
Shrinivas Joshi ◽  
Uttam More ◽  
Venkatrao Kulkarni ◽  
Tejraj Aminabhavi

Author(s):  
Hadis Khodadad ◽  
Farhad Hatamjafari ◽  
Khalil Pourshamsian ◽  
Babak Sadeghi

Aim and Objective: Microwave-assisted condensation of acetophenone 1 and aromatic aldehydes 2 gave chalcone analogs 3, which were cyclized to pyrazole derivatives 6a-f via the reaction with hydrazine hydrate and oxalic acid in the presence of the catalytic amount of acetic acid in ethanol. Materials and Methods: The structural features of the synthesized compounds were characterized by melting point, FT-IR, 1H, 13C NMR and elemental analysis. Results: The antibacterial activities of the synthesized pyrazoles was evaluated against three gram-positive bacteria such as Enterococcus durans, Staphylococcus aureus, Bacillus subtilis and two gram-negative bacteria such as Escherichia coli and Salmonella typhimurium. Conclusion: All the synthesized pyrazoles showed relatively high antibacterial activity against S. aureus strain and none of them demonstrated antibacterial activity against E. coli.


2009 ◽  
Vol 9 (3) ◽  
pp. 340-358 ◽  
Author(s):  
V. Santagada ◽  
F. Frecentese ◽  
E. Perissutti ◽  
F. Fiorino ◽  
B. Severino ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document