scholarly journals Ultrasound promoted regioselective nitration of phenols using dilute nitric acid in the presence of phase transfer catalyst

2007 ◽  
Vol 14 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Nitin S. Nandurkar ◽  
Mayur J. Bhanushali ◽  
Sachin R. Jagtap ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Nitric Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Regioselective Nitration ◽  
Dilute Nitric Acid

Cyclic trimeric perfluoro-o-phenylenemercury as the phase transfer catalyst for nitration with dilute nitric acid

1994 ◽  
Vol 43 (3) ◽  
pp. 507-508 ◽  
Author(s):  
A. P. Zaraiskii ◽  
O. I. Kachurin ◽  
L. I. Velichko ◽  
I. A. Tikhonova ◽  
G. G. Furin ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Dilute Nitric Acid

New highly efficient phase transfer catalyst for nitration with dilute nitric acid

1994 ◽  
Vol 43 (11) ◽  
pp. 1936-1937
Author(s):  
A. P. Zaraisky ◽  
O. I. Kachurin ◽  
L. I. Velichko ◽  
I. A. Tikhonova ◽  
A. Yu. Volkonsky ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Highly Efficient ◽  
Dilute Nitric Acid

ChemInform Abstract: Cyclic Trimeric Perfluoro-o-phenylenemercury as Phase-Transfer Catalyst for Reaction of Nitration with Dilute Nitric Acid.

ChemInform ◽  
2010 ◽  
Vol 26 (5) ◽  
pp. no-no
Author(s):  
A. P. ZARAISKII ◽  
O. I. KACHURIN ◽  
L. I. VELICHKO ◽  
I. A. TIKHONOVA ◽  
G. G. FURIN ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Dilute Nitric Acid

ChemInform Abstract: A New Highly Effective Phase Transfer Catalyst for Nitrations with Dilute Nitric Acid.

ChemInform ◽  
2010 ◽  
Vol 26 (23) ◽  
pp. no-no
Author(s):  
A. P. ZARAISKII ◽  
O. I. KACHURIN ◽  
L. I. VELICHKO ◽  
I. A. TIKHONOVA ◽  
A. YU. VOLKONSKII ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Highly Effective ◽  
Effective Phase ◽  
Dilute Nitric Acid

Nitration of Phenol and Substituted Phenols with Dilute Nitric Acid Using Phase-Transfer Catalysts

2003 ◽  
Vol 7 (1) ◽  
pp. 95-97 ◽  
Author(s):  
Ashutosh V. Joshi ◽  
Mubeen Baidoosi ◽  
Sudip Mukhopadhyay ◽  
Yoel Sasson
Keyword(s):  
Nitric Acid ◽  
Phase Transfer ◽  
Substituted Phenols ◽  
Phase Transfer Catalysts ◽  
Dilute Nitric Acid

Ultrasound-Assisted Regioselective Nitration of Phenols Using Dilute Nitric Acid in a Biphasic Medium

2007 ◽  
Vol 46 (25) ◽  
pp. 8590-8596 ◽  
Author(s):  
Nitin S. Nandurkar ◽  
Malhari D. Bhor ◽  
Shriniwas D. Samant ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Nitric Acid ◽  
Ultrasound Assisted ◽  
Biphasic Medium ◽  
Regioselective Nitration ◽  
Dilute Nitric Acid

Oxidation of 4-nitro-o-xylene with nitric acid using N-hydroxyphthalimide under phase transfer conditions

2015 ◽  
Vol 69 (4) ◽  
Author(s):  
Song-Bo Wei ◽  
Bo Tang ◽  
Xin-Hua Peng
Keyword(s):  
Nitric Acid ◽  
Atmospheric Pressure ◽  
Phase Transfer ◽  
High Yield ◽  
Oxidizing Agent ◽  
Nitrobenzoic Acid ◽  
Radical Initiators ◽  
Cobalt Dichloride ◽  
Dilute Nitric Acid

Abstract4-Nitro-o-xylene was selectively oxidized to 2-methyl-4-nitrobenzoic acid using dilute nitric acid as the oxidizing agent under atmospheric pressure. The oxidation of 4-nitro-o-xylene was effectively promoted by an addition of radical initiators. Under reflux, 2-methyl-4-nitrobenzoic acid was afforded in high yield using nitric acid combined with N-hydroxyphthalimide, cobalt dichloride (CoCl

scholarly journals Microbial nitrification and acidification of lacustrine sediments deduced from the nature of a sedimentary kaolin deposit in central Japan

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tetsuichi Takagi ◽  
Ki-Cheol Shin ◽  
Mayumi Jige ◽  
Mihoko Hoshino ◽  
Katsuhiro Tsukimura
Keyword(s):  
Nitric Acid ◽  
Lacustrine Sediments ◽  
Kaolin Clay ◽  
Central Japan ◽  
Inland Lakes ◽  
Fe Oxidation ◽  
Stable Isotopic ◽  
Fe Hydroxide ◽  
Kaolin Deposit ◽  
Dilute Nitric Acid

AbstractKaolin deposits in the Seto-Tono district, central Japan, were formed by intense kaolinization of lacustrine arkose sediments deposited in small and shallow inland lakes in the late Miocene. Based on mineralogical and stable isotopic (Fe, C, N) studies of Motoyama kaolin deposit in the Seto area, we concluded that it was formed by microbial nitrification and acidification of lacustrine sediments underneath an inland lake. Small amounts of Fe–Ti oxides and Fe-hydroxide in the kaolin clay indicated that iron was oxidized and leached during the kaolinization. The field occurrences indicate that leached ferric iron precipitated on the bottom of the kaolin deposit as limonite crusts, and their significantly fractionated Fe isotope compositions suggest the involvement of microbial activity. The C/N ratios of most of the kaolin clay are distinctly higher than those of modern lacustrine sediment. Although, the possibility of a low-temperature hydrothermal origin of the kaolin deposit cannot be completely ruled out, it is more likely that acidification by dilute nitric acid formed from plant-derived ammonia could have caused the kaolinization, Fe oxidation and leaching. The nitrate-dependent microbial Fe oxidation is consistent with dilute nitric acid being the predominant oxidant.

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