AN EFFICIENT, GREEN, CATALYST FREE SYNTHESIS AND CRYSTALLOGRAPHIC STUDY OF BENZO-4H-PYRANS IN AQUEOUS MEDIUM
نویسندگان
چکیده
منابع مشابه
An Efficient One-Pot Green Synthesis of 4H-Benzo[b]pyrans Using Guanidinium Chloride as Polyfunctional Organocatalyst
A simple, efficient, and high yielding one-pot protocol has been developed for the synthesis of 4H-benzo[b]pyrans scaffolds installing a three-component tandem Knoevenagel-cyclocondensation reaction of an aldehyde, malononitrile and dimedone using guanidinium chloride as polyfunctional organocatalyst under solvent-free conditions in high to excellent yields. Various aromatic aldehydes were util...
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چکیده ندارد.
an efficient one-pot green synthesis of 4h-benzo[b]pyrans using guanidinium chloride as polyfunctional organocatalyst
a simple, efficient, and high yielding one-pot protocol has been developed for the synthesis of 4h-benzo[b]pyrans scaffolds installing a three-component tandem knoevenagel-cyclocondensation reaction of an aldehyde, malononitrile and dimedone using guanidinium chloride as polyfunctional organocatalyst under solvent-free conditions in high to excellent yields. various aromatic aldehydes were util...
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An environmentally friendly, green, and highly efficient process for the synthesis of biologically and pharmacologically 4H-benzo[b]pyrans and 3,4-dihydropyrano [c] chromenes is developed by condensing cyclic aromatic aldehydes, malononitrile, and dimedone or 4‐hydroxycoumarin in the presence of lactic acid as an efficient and green catalyst. The corresponding products have b...
متن کاملEmploying a hydrophobic-bentonite as a highly efficient and versatile catalyst for a green one-pot and rapid synthesis of 4H-benzo-[b]-pyran derivatives
A hydrophobic-bentonite catalyst (cetyltrimethyl ammonium bromide-bentonite) has been used as a very mild, neutral, eco-friendly, reusable, non-toxic, low-cost and easily available catalyst. It was prepared by replacing the exchangeable Na+ cations of a homoionic Na–bentonite with cetyltrimethyl ammonium bromide (CTMAB) cations. The catalyst was characterized by XRD, BET and SEM. The...
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ژورنال
عنوان ژورنال: Journal of Drug Delivery and Therapeutics
سال: 2019
ISSN: 2250-1177
DOI: 10.22270/jddt.v9i4-a.3418