Selective Removal ofN-Boc Protecting Group from Aromatic Amines Using Silica Gel-Supported Sodium Hydrogen Sulfate and HY-Zeolite as Heterogeneous Catalysts[1]

Advanced Synthesis & Catalysis ◽

10.1002/adsc.200303108 ◽

2003 ◽

Vol 345 (11) ◽

pp. 1207-1208 ◽

Author(s):

N. Ravindranath ◽

C. Ramesh ◽

M. Ravinder Reddy ◽

Biswanath Das

Keyword(s):

Aromatic Amines ◽

Heterogeneous Catalysts ◽

Selective Removal ◽

Hydrogen Sulfate ◽

Protecting Group ◽

Sodium Hydrogen

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Studies in Novel Synthetic Methodologies. Part 19. Selective Removal of N-Boc Protecting Group from Aromatic Amines Using Silica Gel-Supported Sodium Hydrogen Sulfate and HY-Zeolite as Heterogeneous Catalysts.

10.1002/chin.200411068 ◽

2004 ◽

Vol 35 (11) ◽

Author(s):

N. Ravindranath ◽

C. Ramesh ◽

M. Ravinder Reddy ◽

Biswanath Das

Keyword(s):

Aromatic Amines ◽

Heterogeneous Catalysts ◽

Selective Removal ◽

Hydrogen Sulfate ◽

Protecting Group ◽

Sodium Hydrogen ◽

Synthetic Methodologies

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A simple and efficient procedure for diazotization-iodination of aromatic amines in aqueous pastes by the action of sodium nitrite and sodium hydrogen sulfate

Russian Journal of Organic Chemistry ◽

10.1134/s1070428008080253 ◽

2008 ◽

Vol 44 (8) ◽

pp. 1243-1244 ◽

Author(s):

D. A. Gorlushko ◽

V. D. Filimonov ◽

N. I. Semenishcheva ◽

E. A. Krasnokutskaya ◽

A. N. Tret’yakov ◽

...

Keyword(s):

Sodium Nitrite ◽

Aromatic Amines ◽

Hydrogen Sulfate ◽

Efficient Procedure ◽

Sodium Hydrogen

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ChemInform Abstract: Synthetic Studies on Natural Products. Part 12. Conversion of Camptothecins to Mappicine Ketones Using Silica Gel Supported Sodium Hydrogen Sulfate Catalyst.

10.1002/chin.200046225 ◽

2010 ◽

Vol 31 (46) ◽

pp. no-no

Author(s):

Biswanath Das ◽

P. Madhusudhan

Keyword(s):

Natural Products ◽

Hydrogen Sulfate ◽

Sodium Hydrogen ◽

Synthetic Studies

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A Highly Selective and Efficient Method for the Preparation of Amides from Carboxylic Acids and Amines Using Sodium Hydrogen Sulfate Adsorbed on Silica Gel †

World Journal of Applied Chemistry ◽

10.11648/j.wjac.20190401.13 ◽

2019 ◽

Vol 4 (1) ◽

pp. 14 ◽

Author(s):

Rathod Aravind Kumar ◽

Nayaki Salvanna ◽

Biswanath Das ◽

Jajula Kashanna

Keyword(s):

Carboxylic Acids ◽

Efficient Method ◽

Hydrogen Sulfate ◽

Sodium Hydrogen

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Microwave-Assisted Efficient Synthesis of Diimines in Dry Media Using Silica Gel Supported Sodium Hydrogen Sulfate as Reusable Solid Support.

10.1002/chin.200620040 ◽

2006 ◽

Vol 37 (20) ◽

Author(s):

Ayoob Bazgir

Keyword(s):

Solid Support ◽

Hydrogen Sulfate ◽

Efficient Synthesis ◽

Microwave Assisted ◽

Sodium Hydrogen

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An Efficient and Rapid Approach to Quinolines via Friedländer Synthesis Catalyzed by Silica Gel Supported Sodium Hydrogen Sulfate Under Solvent-Free Conditions

Monatshefte für Chemie - Chemical Monthly ◽

10.1007/s00706-007-0678-2 ◽

2007 ◽

Vol 138 (7) ◽

pp. 659-661 ◽

Author(s):

Minoo Dabiri ◽

Seyyedeh Cobra Azimi ◽

Ayoob Bazgir

Keyword(s):

Solvent Free ◽

Hydrogen Sulfate ◽

Sodium Hydrogen ◽

Solvent Free Conditions ◽

Friedlander Synthesis

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Silica-Supported Sodium Hydrogen Sulfate and Amberlyst-15: Two Efficient Heterogeneous Catalysts for Single-Step Synthesis of 4(3H)-Quinazolinones from Anthranilic Acid, Orthoesters, and Amines under Solvent-Free Conditions.

10.1002/chin.200503152 ◽

2005 ◽

Vol 36 (3) ◽

Author(s):

Biswanath Das ◽

Joydeep Banerjee

Keyword(s):

Anthranilic Acid ◽

Heterogeneous Catalysts ◽

Single Step ◽

Solvent Free ◽

Hydrogen Sulfate ◽

Amberlyst 15 ◽

Sodium Hydrogen ◽

Solvent Free Conditions

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ChemInform Abstract: Efficient Synthesis of Triarylmethanes via Bisarylation of Aryl Aldehydes with Arenes Catalyzed by Silica Gel Supported Sodium Hydrogen Sulfate.

10.1002/chin.201032100 ◽

2010 ◽

Vol 41 (32) ◽

pp. no-no

Author(s):

Yixin Leng ◽

Fang Chen ◽

Li Zuo ◽

Wenhu Duan

Keyword(s):

Hydrogen Sulfate ◽

Efficient Synthesis ◽

Aryl Aldehydes ◽

Sodium Hydrogen

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Studies on Novel Synthetic Methodologies. Part 25. Silica Supported Sodium Hydrogen Sulfate and Amberlyst-15: Two Efficient Heterogeneous Catalysts for Facile Synthesis of Bis- and Tris(1H-indol-3-yl)methanes from Indoles and Carbonyl Compounds.

10.1002/chin.200334097 ◽

2003 ◽

Vol 34 (34) ◽

Author(s):

Chimmani Ramesh ◽

Joydeep Banerjee ◽

Rammohan Pal ◽

Biswanath Das

Keyword(s):

Carbonyl Compounds ◽

Heterogeneous Catalysts ◽

Hydrogen Sulfate ◽

Facile Synthesis ◽

Amberlyst 15 ◽

Sodium Hydrogen ◽

Synthetic Methodologies

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Adsorption Behavior of Sodium Hydrogen Sulfate on Silica Gel

Asian Journal of Chemical Sciences ◽

10.9734/ajocs/2020/v7i319024 ◽

2020 ◽

pp. 38-46

Author(s):

Jumei Xu ◽

Zhongkai Jiang ◽

Zuoxiang Zeng ◽

Weilan Xue

Keyword(s):

Adsorption Behavior ◽

Hydrogen Sulfate ◽

Average Characteristic ◽

Isotherm Equation ◽

Physical Mechanisms ◽

Sodium Hydrogen ◽

Sodium Bisulfate ◽

Different Temperatures ◽

Characteristic Concentration

The adsorption behavior of sodium bisulfate on silica gel was studied. The adsorption isothem of sodium hydrogen sulfate on silica gel were measured in the temperature range of 298.15 ~ 328.15 K, and the Langmuir model and the Dubini-Radushkevich (D-R) model were used to fit the experimental isotherm data. The average characteristic concentration (Ce') of NaHSO4 was determined at different temperatures to distinguish chemisorption from physisorption. The values of the mean free energy (E) calculated from the D−R isotherm equation indicated that the adsorption of NaHSO4 on silica gel occurs by sequential chemical and physical mechanisms.

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