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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 48, 2018 - Issue 1
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Original Articles

Silica-supported perchloric acid and potassium bisulfate as reusable green catalysts for nitration of aromatics under solvent-free microwave conditions

M. Satish KumarDepartment of Chemistry, Osmania University, Hyderabad, Telangana, India
,
Y. Hemanth SriramDepartment of Chemistry, Osmania University, Hyderabad, Telangana, India
,
M. VenkateswarluDepartment of Chemistry, Osmania University, Hyderabad, Telangana, India
,
K. C. RajannaDepartment of Chemistry, Osmania University, Hyderabad, Telangana, IndiaCorrespondence[email protected]
,
M. Sai SudhakarDepartment of Chemistry, BITS Pilani, Hyderabad, Telangana, India
,
Purugula VenkannaDepartment of Chemistry, Osmania University, Hyderabad, Telangana, India
&
P. K. SaiprakashDepartment of Chemistry, Osmania University, Hyderabad, Telangana, India
 show all
Pages 59-67 | Received 25 Jun 2017, Published online: 15 Dec 2017
 
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ABSTRACT

Silica-supported perchloric acid and bisulfate (SiO2/HClO4 and SiO2/KHSO4) have been developed as reusable green catalysts for nitration of aromatic compounds using NaNO2 in acetonitrile medium under conventional and solvent-free microwave conditions. The reaction times under microwave irradiation are significantly shorter than conventional method even though the yields obtained in microwave-assisted reactions are comparable with those obtained under reflux conditions.

GRAPHICAL ABSTRACT

Acknowledgment

The authors are grateful to the Head (Chemistry Department), Osmania University Hyderabad for constant support and encouragement.

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