Efficient Conjugate Addition of 1H-Indoles to Electron-Deficient Olefins Catalyzed by Silica-Supported Sodium Hydrogen Sulfate (NaHSO4 ⋅ SiO2)

Biswanath Das; Nikhil Chowdhury; K. Damodar; K. Ravinder Reddy

doi:10.1002/hlca.200790040

Efficient Conjugate Addition of 1H-Indoles to Electron-Deficient Olefins Catalyzed by Silica-Supported Sodium Hydrogen Sulfate (NaHSO4 ⋅ SiO2)

Helvetica Chimica Acta ◽

10.1002/hlca.200790040 ◽

2007 ◽

Vol 90 (2) ◽

pp. 340-345 ◽

Cited By ~ 18

Author(s):

Biswanath Das ◽

Nikhil Chowdhury ◽

K. Damodar ◽

K. Ravinder Reddy

Keyword(s):

Conjugate Addition ◽

Hydrogen Sulfate ◽

Sodium Hydrogen

Download Full-text

Rapid, efficient and selective conjugate addition of thiols to α, β-unsaturated carbonyl compounds using silica supported sodium hydrogen sulfate under solvent-free conditions

Journal of Sulfur Chemistry ◽

10.1080/17415990801935409 ◽

2008 ◽

Vol 29 (5) ◽

pp. 489-494 ◽

Cited By ~ 5

Author(s):

Biswanath Das ◽

Avula Satya Kumar ◽

Bommena Ravikanth ◽

Kongara Damodar ◽

Martha Krishnaiah

Keyword(s):

Carbonyl Compounds ◽

Conjugate Addition ◽

Solvent Free ◽

Hydrogen Sulfate ◽

Sodium Hydrogen ◽

Solvent Free Conditions

Download Full-text

Novel Synthetic Methodologies. Part 120. Efficient Conjugate Addition of 1H-Indoles to Electron-Deficient Olefins Catalyzed by Silica-Supported Sodium Hydrogen Sulfate (NaHSO4×SiO2).

ChemInform ◽

10.1002/chin.200725106 ◽

2007 ◽

Vol 38 (25) ◽

Author(s):

Biswanath Das ◽

Nikhil Chowdhury K. Damodar ◽

K. Ravinder Reddy

Keyword(s):

Conjugate Addition ◽

Hydrogen Sulfate ◽

Sodium Hydrogen ◽

Synthetic Methodologies

Download Full-text

A Simple and Facile Solventless Procedure for the Cyclization of 2′-Amino- and 2′-Hydroxy-chalcones Using Silica-Supported Sodium Hydrogen Sulfate as Heterogenous Catalyst.

ChemInform ◽

10.1002/chin.200717134 ◽

2007 ◽

Vol 38 (17) ◽

Author(s):

K. Hemanth Kumar ◽

P. T. Perumal

Keyword(s):

Hydrogen Sulfate ◽

Sodium Hydrogen ◽

Heterogenous Catalyst

Download Full-text

Sodium Hydrogen Sulfate, Fused

ACS Reagent Chemicals ◽

10.1021/acsreagents.4349 ◽

2017 ◽

Keyword(s):

Hydrogen Sulfate ◽

Sodium Hydrogen

Download Full-text

A Simple and Facile Stereoselective Synthesis of (Z)- and (E)-Allyl Halides Catalyzed by Silica Supported Sodium Hydrogen Sulfate: Factors Influencing the Yields and Stereochemistry of Allyl Halides.

ChemInform ◽

10.1002/chin.200449080 ◽

2004 ◽

Vol 35 (49) ◽

Author(s):

Biswanath Das ◽

Joydeep Banerjee ◽

Nasi Ravindranath

Keyword(s):

Stereoselective Synthesis ◽

Hydrogen Sulfate ◽

Factors Influencing ◽

Sodium Hydrogen ◽

Allyl Halides

Download Full-text

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 ◽

Cited By ~ 9

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

Download Full-text

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 ◽

Cited By ~ 17

Author(s):

N. Ravindranath ◽

C. Ramesh ◽

M. Ravinder Reddy ◽

Biswanath Das

Keyword(s):

Silica Gel ◽

Aromatic Amines ◽

Heterogeneous Catalysts ◽

Selective Removal ◽

Hydrogen Sulfate ◽

Protecting Group ◽

Hy Zeolite ◽

Sodium Hydrogen

Download Full-text

Studies on Novel Synthetic Methodologies. Part 26. Simple, Efficient, and Selective Deprotection of Phenolic Methoxymethyl Ethers Using Silica-Supported Sodium Hydrogen Sulfate as a Heterogeneous Catalyst.

ChemInform ◽

10.1002/chin.200404044 ◽

2004 ◽

Vol 35 (4) ◽

Author(s):

C. Ramesh ◽

N. Ravindranath ◽

Biswanath Das

Keyword(s):

Heterogeneous Catalyst ◽

Hydrogen Sulfate ◽

Sodium Hydrogen ◽

Synthetic Methodologies

Download Full-text

A simple and efficient method for α-bromination of carbonyl compounds using N-bromosuccinimide in the presence of silica-supported sodium hydrogen sulfate as a heterogeneous catalyst

Tetrahedron Letters ◽

10.1016/j.tetlet.2005.03.020 ◽

2005 ◽

Vol 46 (17) ◽

pp. 3041-3044 ◽

Cited By ~ 75

Author(s):

Biswanath Das ◽

Katta Venkateswarlu ◽

Gurram Mahender ◽

Ibram Mahender

Keyword(s):

Heterogeneous Catalyst ◽

Efficient Method ◽

Carbonyl Compounds ◽

Hydrogen Sulfate ◽

Sodium Hydrogen

Download Full-text

Preparation of Nano Silica Supported Sodium Hydrogen Sulfate: As an Efficient Catalyst for the Trimethyl, Triethyl andt-Butyldimethyl Silylations of Aliphatic and Aromatic Alcohols in Solution and under Solvent-free Conditions

Journal of the Chinese Chemical Society ◽

10.1002/jccs.201300586 ◽

2014 ◽

Vol 61 (8) ◽

pp. 929-934 ◽

Cited By ~ 1

Author(s):

Abdolreza Abri ◽

Somayeh Ranjdar

Keyword(s):

Solvent Free ◽

Hydrogen Sulfate ◽

Nano Silica ◽

Efficient Catalyst ◽

Sodium Hydrogen ◽

Solvent Free Conditions ◽

Aromatic Alcohols

Download Full-text