Ghadamyari, Zohreh et al. published their research in ChemistrySelect in 2019 | CAS: 2670-38-4

3,4-Dichlorobenzamide (cas: 2670-38-4) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Safety of 3,4-Dichlorobenzamide

Co(II)-Porphyrin Immobilized on Graphene Oxide: An Efficient Catalyst for the Beckmann Rearrangement was written by Ghadamyari, Zohreh;Khojastehnezhad, Amir;Seyedi, Seyed Mohammad;Shiri, Ali. And the article was included in ChemistrySelect in 2019.Safety of 3,4-Dichlorobenzamide This article mentions the following:

In this report, the synthesis of amides from aldoximes (Beckmann rearrangement) has been reported using cobalt(II) porphyrin covalently linked to graphene oxide as a nano heterogeneous catalyst. The prepared catalyst was characterized by applying of FT-IR, TGA, TEM, SEM, EDX, ICP and UV-Vis techniques. All anal. confirm the successful insertion of cobalt into the porphyrin ring and covalently linkage of Co-Porphyrin on the graphene oxide. Moreover, the prepared catalyst was applied in order to investigate its performance in the Beckmann rearrangement. This heterogeneous catalyst exhibited excellent catalytic efficiency with a high yield of products. Also, the suggested catalyst could be recycled for five runs without a dramatic decrease in its catalytic activity or metal leaching. In the experiment, the researchers used many compounds, for example, 3,4-Dichlorobenzamide (cas: 2670-38-4Safety of 3,4-Dichlorobenzamide).

3,4-Dichlorobenzamide (cas: 2670-38-4) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Safety of 3,4-Dichlorobenzamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics