Aromatization of 1,4-dihydropyridines in the presence of methanesulfonic acid/NaNO<sub>2</sub>/wet SiO<sub>2</sub>under both heterogeneous and solvent free conditions
作者:Khodabakhsh Niknam、Seyed Mehdi Razavian、Mohammah Ali Zolfigol、Iraj Mohammahpoor-Baltork
DOI:10.1002/jhet.5570430131
日期:2006.1
A combination of methanesulfonic acid and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of 1,4-dihydropyridines to the corresponding pyridine derivatives under mild and heterogeneousconditions in excellent yields.
Efficient Oxidation of Hantzsch 1,4-Dihydropyridines with Nicotinium Dichromate
作者:M. M. Sadeghi、I. Mohammadpoor-Baltork、H. R. Memarian、S. Sobhani
DOI:10.1080/00397910008087204
日期:2000.4.1
A convenient method for the oxidation of various 4-substituted Hantzsch 1,4-dihydropyridines with nicotinium dichromate (NDC) in refluxing acetonitrile is reported. The yields obtained are excellent.
Mohammadpoor-Baltork, Iraj; Sadeghi, Majid M. M.; Memarian, Hamid Reza, Journal of Chemical Research, 2000, vol. 2000, # 1, p. 40 - 41
作者:Mohammadpoor-Baltork, Iraj、Sadeghi, Majid M. M.、Memarian, Hamid Reza、Pairow, Raihaneh
DOI:——
日期:——
AROMATIZATION OF HANTZSCH 1,4-DIHYDROPYRIDINES USING BARIUM MANGANATE
作者:Hamid R. Memarian、Majid M. Sadeghi、Ahmad R. Momeni
DOI:10.1081/scc-100104821
日期:2001.1
Barium manganate has been used as an inexpensive and convenient reagent for efficient oxidation of a variety of 1,4-dihydropyridine derivatives to pyridine derivatives in refluxing benzene with excellent yields.
Silica Chloride/NaNO 2 as a Novel Heterogeneous System for the Oxidation of 1,4-Dihydropyridines Under Mild Conditions via In Situ Generation of NOCl
作者:Mohammad Ali Zolfigol、Farhad Shirini、Arash Ghorbani Choghamarani、Iraj Mohammadpoor-Baltork
DOI:10.1080/10426500307836
日期:2003.8.1
A combination of silica chloride and sodium nitrite in the presence of wet SiO2 were used as an effective oxidizing agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives under mild and heterogeneous conditions in moderate to excellent yields.