Premium
Starch sulfate as an efficient and biodegradable polymer catalyst for one‐pot, four‐component reaction of 2 H ‐indazolo[2,1‐ b ]phthalazine‐triones
Author(s) -
Shaterian Hamid Reza,
Rigi Fatemeh
Publication year - 2011
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.201000144
Subject(s) - phthalazine , phthalic anhydride , dimedone , catalysis , chemistry , sulfate , starch , condensation reaction , organic chemistry , polymer chemistry
A practical and green method for the synthesis of 2 H ‐indazolo[2,1‐b]phthalazine‐1,6,11(13 H )‐trione derivatives using starch sulfate as a solid acid catalyst for the four‐component condensation reaction from hydrazinium hydroxide, phthalic anhydride, dimedone, and aromatic aldehydes under thermal solvent‐free conditions is described for the first time. Starch sulfate, a recyclable and easily handled catalyst has been demonstrated as a new catalyst for the synthesis of these classes of compounds.