Articles written in Journal of Chemical Sciences
Volume 130 Issue 11 November 2018 Article ID 0154
A novel library of aminomethylphenol has been developed using magnetic Fe3O4nanoparticles via Petasis borono-Mannich reaction of salicylaldehydes, secondary amines and phenyl boronic acids. This one-pot protocol features mild reaction conditions, excellent yields in short reaction times, readily available starting materials, good functional group tolerance and reusability of the catalyst for four consecutive cycles without significant loss in its activity.
Volume 131 Issue 4 April 2019 Article ID 0029
An efﬁcient synthesis of a series of pyrazolopyridocoumarins is reported by condensation of 4hydroxycoumarin, benzaldehydes and 1-alkyl-5-amino-pyrazoles in the presence of 10 mol% zinc chloride in ethanol under reﬂux conditions through one-pot reaction. The signiﬁcant attraction of this protocol is being a simple procedure, mild reaction condition, and excellent yield. The molecular structure of the compound (4e) is established by single crystal X-ray structure determination.
Volume 133 All articles Published: 30 April 2021 Article ID 0047
A novel and efficient one-pot method has been developed for the synthesis of cyclopropanes by the cyclization of 4-bromomethylcoumrains, benzaldehydes and active methylene groups in 1:1 acetonitrile and water solvent in the presence of KSCN and K2CO3 as a catalyst at room temperature for 2-5 h. The significant attraction of this procedure is environmentally benign, simple procedure, the ready accessibility of the catalyst, excellent yield and mild reaction conditions. The structure of the target molecule (4b) was confirmed by X-ray diffraction.
Synopsis: A library of novel cyclopropanyl coumarin derivatives were synthesised in good yields through one-pot three-component cyclization of 4-bromomethylcoumarins, benzaldehydes and active methylene groups. The structures of the synthesised compounds were confirmed by spectral methods viz. IR, 1H NMR, 13C NMR, mass spectral analysis and X-ray diffraction studies.
Volume 134, 2022
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