N,N′-(Propane-1,3-diyl)bis(2-aminobenzamide)

Abstract

The title compound, C17H20N4O2, was prepared by the reaction between 1,3-di­amino­propane and isatoic anhydride in water. The carbonyl O atoms are involved in intra­molecular hydrogen bonding with the amine group and inter­molecular hydrogen bonding with an amide H atom of an adjacent mol­ecule. In the crystal, pairs of N—H⋯O hydrogen bonds link mol­ecules into inversion dimers and further N—H⋯O hydrogen bonds link the dimers into ladder-like chains along the a axis.

Synthesis and Biological Evaluation of 2-Aminobenzamide Derivatives as Antimicrobial Agents: Opening/Closing Pharmacophore Site

“…It was believed that amide can exist in two major tautomeric forms, keto-amine and hydroxy-enamine, although keto-amine form is predominant in the solid state [28] as shown in Figure 1. We investigated the potential pharmacophores of various bioactive compounds for their antibacterial [29–33], antifungal [34,35] and antiviral activity [36], and verified them further with Petra/Osiris/Molinspiration (POM) analyses.…”

“…The main differences between the two crystalline forms lie in the intramolecular hydrogen of NH 2 bonding and its relative orientation to oxygen of amide [28]. Attractive intramolecular interactions occur and are responsible for the closure of pharmacophore site (C=O δ− –NH 2 δ+ ).…”

V‐N‐C catalysts anchored to mesoporous Al‐SBA‐15 with tailorable pore sizes for the synthesis of spirooxindole dihydroquinazolinones derivatives

“…Microcrystalline solid product was created on allowing the mixture to stand overnight. The desired product was purified and recrystallized from ethanol/water mixture . The structure of the ligand was confirmed using 1 H‐NMR and shown in Figure .…”

EXPERIMENTAL AND THEORETICAL ANALYSIS OF N,N’-(ETHANE-1,2-DIYLBIS(4,1-PHENYLENE))BIS(1-(THIOPHEN-2-YL)METHANIMINE) AND N,N’-(ETHANE-1,2-DIYLBIS(4,1-PHENYLENE))BIS(1-(4-METHYLTHIOPHEN-2-YL)METHANIMINE) SCHIFF BASE LIGANDS

“…In Gaussian G09w program package 20 , calculations were made by 6-311++G(2d,p) basis set using B3LYP theory with Becke's three parameter hybrid variable function and Lee-Yang-Parr's correlation function. [22][23][24][25][26] NMR and FT-IR spectrums were calculated from optimized geometrics using the same method and basis set. GIAO method was used in theoretical 1 Hand 13 C-NMR chemicals shift formations.…”

“…According to the 13 C-NMR spectrum of the ligand (1), CH 2 carbon was observed at 37.74ppm, while aromatic carbons were observed at 121. 23 According to the 1 H-NMR spectrum of the ligand (1), CH 2 peak was found at 2.95ppm, aromatic hydrogens peaks were found at 7.11-7.26 and 7.50ppm and the peak of CHN at 8.58ppm. According to the 1 H-NMR spectrum of the (2) ligand, CH 3 peak was found at 2.25ppm and the CH 2 peak was at 2.93ppm, aromatic component peaks at 7.10-7.33ppm and CHN peak was found a 8.50ppm.…”