10.6084/m9.figshare.1132637.v3
Pravin G. Hegade
Pravin
G. Hegade
Mansing M. Mane
Mansing
M. Mane
Jayavant D. Patil
Jayavant
D. Patil
Dattaprasad M. Pore
Dattaprasad
M. Pore
Sulfamic Acid: A Mild, Efficient, and Cost-Effective Catalyst for Synthesis of Indoloquinoxalines at Ambient Temperature
Taylor & Francis Group
2014
ninhydrin
efficient
ambient temperature
Indoloquinoxaline
variety
mild
workup procedure
catalyst
method
sulfamic acid
synthesis
diketone
isolation
yield
hydroxynaphthaquinone
isatin
Synthesi
sulfamic
2014-10-15 20:09:38
Journal contribution
https://tandf.figshare.com/articles/journal_contribution/Sulfamic_Acid_A_Mild_Efficient_and_Cost_Effective_Catalyst_for_Synthesis_of_Indoloquinoxalines_at_Ambient_Temperature/1132637
<div><p></p><p>A simple, cost-effective method for synthesis of indoloquinoxalines from isatin and <i>o</i>-phenylenediamine employing a catalytic amount of sulfamic acid at ambient temperature is reported. Moreover, the method is applicable for a variety of isatins, ninhydrin, 4-hydroxynaphthaquinone, and 1,2-diketones. The key features of the protocol include rapid reactions with good yields, simple workup procedure, and easy isolation of products.</p>
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