Solvent-free one-pot synthesis of sulfonephthaleins from saccharin and phenols
Sulfonephthaleins can be synthesized in a single pot from saccharin and phenol via the in situ formation of 2-sulfobenzoic anhydride, followed by its reaction with phenol using H2SO4 as the condensing agent, in the absence of any solvent. This solvent-free synthesis is more economical and environmentally benign. Copyright Taylor & Francis Group, LLC.
Tillu,Dumbre,Borate,Wakharkar,Choudhary
experimental part
p. 1101 - 1107
(2012/05/05)
Solvent-free synthesis of sulfonephthaleins, sulfonefluoresceins and fluoresceins under microwave irradiation
An efficient solvent-free synthesis of sulfonephthaleins, sulfonefluoresceins and fluoresceins under microwave irradiation is reported.
Cihelnik, Simon,Stibor, Ivan,Lhotak, Pavel
p. 1779 - 1789
(2007/10/03)
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