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Title: Tamarind water catalyzed improved synthesis of 2,2ʹ-arylmethylene bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives: A green approach
Authors: Pal, Rammohan
Keywords: Tamarind water;Catalysis;Condensation reaction;Green synthesis;2,2ʹ-arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one)
Issue Date: Feb-2020
Publisher: NISCAIR-CSIR, India
Abstract: The reaction of 5,5-dimethyl-1,3-cyclohexanedione (dimedone) with various aromatic aldehydes catalyzed by tamarind water produces 2,2ʹ-arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives in 85-98% yield under water bath heating at 60°C. Xanthene derivatives as cyclized products have not been obtained by this procedure. This method provides several advantages such as environmental friendliness, high yields and simple work-up procedure. The product is purified by simple filtration followed by crystallization with ethanol and drying processes.
Page(s): 294-299
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.59B(02) [February 2020]

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