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Barnett, William M.; Baughman, Russell G.; Collier, Harvest L.; Vizuete, William

doi:10.1023/a:1009535501461

Cited by 10 publications

(13 citation statements)

References 8 publications

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“…Absorbance spectra were obtained with a Cary 100 Bio UV-Visible Spectrophotometer with solids attachment. 1,1'-Di(aminoethylacetamido)-2,2'-biimidazole [13] (DAEAB) and 1,1'-di(ethoxypropionato)-2,2'-biimidazole [15] (DEPB) were prepared according to published procedures. All other reagents were obtained from Aldrich Chemical Co., and used as received.…”

Section: Methodsmentioning

confidence: 99%

“…Acyclic derivatives of 2,2'-biimidazole have been shown to exhibit cardiotonic [11] and antiprotozoal properties [12]. Over the past few years, new 1,1'disubstituted-2,2'-biimidazole ester, amide-amine, and hydrazide macromolecules have been reported [13][14][15][16]. X-ray diffraction crystallography revealed these compounds assume a trans orientation in the crystalline state that may preclude single metal binding by both substituents.…”

Section: Introductionmentioning

confidence: 99%

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Syntheses and fluorescence of salicylaldimine schiff base derivatives of 1,1′‐di(aminoethylaminocarbonylalkyl)‐2,2′‐biimidazole

Barnett

Carr

Counsil

et al. 2008

Journal of Heterocyclic Chem

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The amide‐amine, 1,1′‐di(aminoethylaminocarbonylethyl)‐2,2′‐biimidazole (DAEPB) (1), and subsequent Schiff base imine product, 1,1′‐di(salicylaldiminoethylaminocarbonylethyl)‐2,2′‐biimidazole (DSEB) (2a), have been synthesized from the ester, 1,1′‐di(ethoxycarbonylethyl)‐2,2′‐biimidazole (DEPB). Additionally, 1,1′‐di(salicylaldiminoethylaminocarbonylmethyl)‐2,2′‐biimidazole (DSMB) (2b), was prepared from its corresponding amide‐amine. All compounds were characterized with FTIR, NMR and elemental analyses. The salicylaldimines, compounds (2a) and (2b), exhibit fluorescence at 540 and 520 nm, respectively, over a broad range of excitation wavelengths.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Syntheses and fluorescence of salicylaldimine schiff base derivatives of 1,1′‐di(aminoethylaminocarbonylalkyl)‐2,2′‐biimidazole

Barnett

Carr

Counsil

et al. 2008

Journal of Heterocyclic Chem

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“…1 and 2, are essentially coplanar, as they exhibit dihedral angles of 5.91 (3) and 0.0 (1) in (I) and (II), respectively. Previously reported derivatives (Barnett, 1997;Barnett et al, 1999;Secondo et al, 1996) have torsion angles along the ring-bridging C atoms of less than 1 , while the dihedral angle for the ring planes of unsubstituted 2,2 H -biimidazole has been reported to be 4.6 (Cromer et al, 1987). Thus, biimidazoles (I) and (II) represent the greatest disparity between imidazole-plane torsion angles for similar derivatives.…”

Section: Commentmentioning

confidence: 98%

“…Recently, a new class of 2,2 H -biimidazole compounds, viz. the 1,1 H -diester derivatives (Barnett, 1997;Barnett et al, 1996Barnett et al, , 1997Barnett et al, , 1999Secondo et al, 1996), has been developed. Ready acylation of primary amines or hydrazine with these diesters proceeds with excellent yields.…”

Section: Commentmentioning

confidence: 99%

1,1′-Di(hydrazinocarbonylmethyl)-2,2′-biimidazole monohydrate and 1,1′-di[2-(hydrazinocarbonyl)ethyl]-2,2′-biimidazole

Barnett¹,

Baughman

Secondo

et al. 2002

Acta Crystallogr C

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The crystal structures of the title compounds, alternatively called 2,2'-(2,2'-biimidazole-1,1'-diyl)diacetohydrazide monohydrate, C(10)H(14)N(8)O(2).H(2)O, (I), and 3,3'-(2,2'-biimidazole-1,1'-diyl)dipropionohydrazide, C(12)H(18)N(8)O(2), (II), respectively, have been determined. The molecules consist of half-molecule asymmetric units related by a twofold rotation in (I) and by a center of inversion in (II). The imidazole rings of both molecules crystallize in a nearly coplanar fashion [dihedral angles of 5.91 (3) and 0.0 (1) degrees for (I) and (II), respectively]. Both planar hydrazinocarbonylalkyl substituents are essentially planar and assume the E orientation.

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“…For other unconjugated 1,1 0 -disubstituted compounds, see: Barnett et al (1997Barnett et al ( , 2002; Secondo et al (1996Secondo et al ( , 1997. For the synthesis, see: Barnett et al (1999) Experimental…”

Section: Related Literaturementioning

confidence: 99%

3,3′-(2,2′-Bi-1H-imidazole-1,1′-diyl)dipropanol

Zhang

Liang

2009

Acta Cryst E

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In the title compound, C12H18N4O2, unlike other unconjugated disubstituted biimidazole derivatives reported so far, the two imidazole rings in a trans conformation exhibit a large planar rotation angle of 51.27 (4)°, and consist of half-molecule asymmetric units related by a twofold rotation. The molecules are linked into a three-dimensional framework with a parallel laminated construction via O—H⋯N and C—H⋯O interactions.

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Untitled

Cited by 10 publications

References 8 publications

Syntheses and fluorescence of salicylaldimine schiff base derivatives of 1,1′‐di(aminoethylaminocarbonylalkyl)‐2,2′‐biimidazole

Syntheses and fluorescence of salicylaldimine schiff base derivatives of 1,1′‐di(aminoethylaminocarbonylalkyl)‐2,2′‐biimidazole

1,1′-Di(hydrazinocarbonylmethyl)-2,2′-biimidazole monohydrate and 1,1′-di[2-(hydrazinocarbonyl)ethyl]-2,2′-biimidazole

3,3′-(2,2′-Bi-1H-imidazole-1,1′-diyl)dipropanol

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