Bispyridinesilver permanganate[Ag(C5H5N)2]MnO4: an efficient oxidizing reagent for organic substrates

Reasons for and Consequences of the Mysterious Behaviour of Newly Prepared Hemipyridine Solvate of Bis(pyridine)silver(I) Permanganate, Agpy2MnO4*0.5py

“…The present paper demonstrates that the elemental composition of the product obtained (1*) via the reaction of KMnO 4 , AgNO 3 and pyridine by using the method of Firouzabadi [1] to produce Agpy 2 MnO 4 (1), differs from the calculated values for Agpy 2 MnO 4 , and the composition of products (1*) strongly depends on the reaction conditions. The powder X-ray diffraction experiments showed the presence of more than one compound in the reaction product (1*) and demonstrated the existence of a short-live intermediate complex which may be transformed into another compound in the isolation process.…”

“…Preparation of the reaction product (1*) [1] Pyridine (2.34 g, 0.03 mol), KMnO 4 (1.58 g, 0.01 mol dissolved in 35 cm 3 of water), and AgNO 3 (1.60 g, 0.01 mol) dissolved in 17.5 cm 3 of H 2 O) were mixed at 10°C. The product (1*) obtained was washed with distilled water and benzene, dried and then stored in dark.…”

“…A synthetic product prepared as bis(pyridine)silver(I) permanganate, 'Agpy 2 MnO 4 ' (1*) is a mild and selective oxidant used widely in organic chemistry [1][2][3][4][5][6][7]. The present paper demonstrates that the elemental composition of the product obtained (1*) via the reaction of KMnO 4 , AgNO 3 and pyridine by using the method of Firouzabadi [1] to produce Agpy 2 MnO 4 (1), differs from the calculated values for Agpy 2 MnO 4 , and the composition of products (1*) strongly depends on the reaction conditions.…”

Synthesis of octa-b-formylporphyrins as templates for functionalized tetrabenzoporphyrins

“…The mild oxidation of the dialcohol 4 to dialdehyde 5 was performed using the silver-pyridyl complex ([Ag(Py) 2 ]MnO 4 ) in toluene at 100°C (34% yield). 3 Currently, we are investigating improvements in the yield of this last step since 5 may be very sensitive to silica gel. We will check the use of the crude product 5 for obtaining of 6 in the synthetic route.…”

Synthesis and oxidative cyclization of 7-amino-3-R-4,6-dinitrobenzo[d]isoxazoles

“…1a,4 The complex AgPy 2 MnO 4 was prepared according to a known procedure. 9 Synthesis of compounds 3a,b (general procedure). Bis(pyri dine) silver permanganate AgPy 2 MnO 4 (1.15 g, 3 mmol) was added portionwise to a solution of compound 1 or 2 (2 mmol) in a saturated solution of NH 3 in MeOH (15 mL) at -10 °C.…”