Beilstein J. Org. Chem. 2018, 14, 2396–2403.
(230–400 mesh) and hexane/ethyl acetate mixtures as eluent,
unless otherwise specified. NMR spectra were recorded on
either a 400 MHz or a 700 MHz instrument at 25 °C. The chem-
ical shift values are reported in ppm (parts per million) with
respect to residual chloroform (7.26 ppm for 1H and 77.16 for
13C) or DMSO (2.5 ppm for 1H and 39.5 for 13C). Data are re-
ported as follows: chemical shift in ppm (δ), multiplicity
(s = singlet, d = doublet, t = triplet, q = quartet, brs = broad
singlet, m = multiplet), coupling constant (Hz) and integration.
High-resolution mass spectra (HRMS) were recorded on an
ESI–TOF (time of flight) mass spectrometer. IR (infrared) spec-
tral data are reported in wave numbers (cm−1). Melting points
(mp) of the compounds were determined using a digital melting
point apparatus and are uncorrected.
Supporting Information
Supporting Information File 1
Characterization data, NMR spectra and crystallographic
information.
Acknowledgements
The activity was supported by DST (New Delhi, India). We are
thankful to Dr. Milan Kr. Barman (NISER, Bhubaneswar) for
X-ray crystallographic analysis. MTA and SM are thankful to
UGC (India) and CSIR (India) for fellowship, respectively.
ORCID® iDs
Caution. When aniline and IBX are mixed under solvent-free
conditions or at maximum contact, immediate explosion was
observed. However, no explosion could be observed under simi-
lar conditions when 2-aminobenzamide and arylaldehydes were
reacted in the presence of IBX. However, it is highly recom-
mended to consult the general safety protocols at the laboratory
and all reactions should be carried out in a fume hood behind a
blast shield.
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