Synthesis, Characterization and Crystal Structure of N,N′-Bis(2,3-Dimethoxybenzylidene)-1,2-Diaminoethane

Structure and Antibacterial Activity of 3-(3,4-Dimethoxyphenyl)furan-2(5H)-ones

“…The center five-member ring is therefore identified as a furan-2(5H)-one, which are consistent with the analogues previously reported [11,12]. An sp 3 orbital of O2, O3, O4 or O5 is conjugated with the attached double bond, which shortens the bond length of C-O from about 1.43 Å [15,16] to 1.36 Å . O3-C10 (1.333(2) Å ) is further shortened by the strong electron withdrawing effect of carbonyl group (C8-O1), which is intermediated by p molecular orbital of C7-C10.…”

Crystal Structures of Novel Bis-No-Acyclic Schiff Base Compounds

“…The methyl hydrogen atoms were allowed to rotate freely about the adjacent C-C bonds. The isotropic atomic displacement parameters of hydrogen atoms were set to 1.5U eq (C) for methyl groups and to 1. are consistent with the sp 2 hybrid character of C7 and N1 atoms [20][21][22][23][24][25]. There is one intramolecular hydrogen bond of the O-HѱN type in the compounds L 1 and L 2 ( Table 3).…”

“…Recently, our group has reported the syntheses and crystal structures of Schiff base compounds [ 4,[20][21][22][23][24][25]. Herein, we report the synthesis and the crystal structure determination of novel bis-NOacyclic Schiff base compounds, derived from 3-methoxy-4-(2-(4-formyl-2-ethoxyphenoxy)ethoxy)benzaldehyde with 2-aminophenol (L 1 ) or 4-aminophenol (L 2 ) (Scheme 1).…”

Controlling Solvate Formation of a Schiff Base by Combining Mechano-chemistry with Solution Synthesis

“…[24][25][26][27][28] Such Schiff bases have drawn attention due to their physical properties in the crystalline state which are greatly influenced by the topochemistry of the Schiff base molecules which in turn is highly affected by the crystal structure. [29][30][31][32][33] During the past decade it became wellrecognised that solvent-free synthesis and mechanochemistry are effective for the efficient and rapid synthesis of a wide range of imines. 34,35 In general, conventional synthesis by condensation of primary amines with carbonyl compounds in solution requires acid catalysis, removal of the generated water and removal of bulk solvent upon the isolation of the product.…”