Synthesis, characterization and DNA interaction studies of new complexes containing 2-mercaptobenzothiazole and different dinitrogen or phosphorous aromatic donors

El-Asmy, Hala A.; Butler, Ian S.; Mouhri, Zhor Senhaji; Jean‐Claude, Bertrand J.; Emmam, Mohamed S.; Mostafa, Sahar I.

doi:10.1016/j.ica.2015.10.041

Cited by 34 publications

(21 citation statements)

References 92 publications

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“…These two bands are absent in the spectra of the complexes [18,25,31]. These data are further supported by the shift of the intense band near 1280 cm À1 due to m(CAO) in the free ligand to higher energy upon complex formation [18,25,31]. As expected, the strong band at 1665 cm À1 that arises from m(C@O) in the free H 2 mesc remains in more or less in the same position in the complexes [25].…”

Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]supporting

confidence: 75%

“…Furthermore, in the substituted catecholato complexes, these m(CAC) stretching vibrations are considerably lower [35], supporting the observation of bands in the complexes near 1435 cm À1 . These features indicate the coordination of H 2 mesc in a binegative, bidentate manner, through the deprotonated hydroxyl center (C(6)-O À and C(7)-O À ) [25,36], i.e., the replacement of the acidic hydrogens by the metal ions [18]. The general features are similar to those observed for catecholato complexes.…”

Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]supporting

confidence: 64%

“…The IR spectrum of H 2 mesc exhibits a strong broad band at 3300 cm À1 , which arises from the m(OH) mode, and there is a deformation d(OH) mode at 1412 cm À1 . These two bands are absent in the spectra of the complexes [18,25,31]. These data are further supported by the shift of the intense band near 1280 cm À1 due to m(CAO) in the free ligand to higher energy upon complex formation [18,25,31].…”

Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]mentioning

confidence: 53%

“…The IR spectra of Na 2 [MoO 2 (mesc) 2 ] and (PPh 4 ) 2 [Mo 2 O 5 (mesc) 2 ] show bands characteristic of the cis-MoO 2 core, the bands near 930 and 910 cm À1 are due to m s (MoO 2 ) and m as (MoO 2 ) stretches, respectively [18,41]. The appearance of two stretching bands is indicative of the cis-configuration [41].…”

Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]mentioning

confidence: 99%

“…lymphoma (P3HR1) and leukemic (THP-1) cell lines were investigated [16]. In our laboratory over the past few years, we have developed some Zn(II), Ag(I), Pd(II) and Pt(II) complexes as potential anticancer agents [17][18][19][20][21][22][23]. Esculetin is a weak acid (pK a1 = 7.3 and pK a2 = 8.0).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Synthesis of new 4-methylesculetin complexes as anti-neoplastic agents and X-ray structure of dimeric bis-bipyridyl-bis-4-methylesculetinato zinc(II)

Butler¹,

Gilson²,

Jean‐Claude³

et al. 2014

Inorganica Chimica Acta

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Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]supporting

confidence: 75%

Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]supporting

confidence: 64%

Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]mentioning

confidence: 53%

Section: X-ray Crystal Structure Of [Zn 2 (Bpy) 2 (Mesc) 2 ]mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthesis of new 4-methylesculetin complexes as anti-neoplastic agents and X-ray structure of dimeric bis-bipyridyl-bis-4-methylesculetinato zinc(II)

Butler¹,

Gilson²,

Jean‐Claude³

et al. 2014

Inorganica Chimica Acta

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Asymmetric transfer hydrogenation of ketones using Ru(0) nanoparticles modified by Chiral Thiones

Reshi

Senthurpandi

Samuelson

2019

Applied Organom Chemis

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The catalytic asymmetric transfer hydrogenation (ATH) of acetophenone in isopropanol by Ru(0) nanoparticles (NPs) obtained by the in‐situ reduction of Ru (II) half‐sandwich complexes of chiral 2‐oxazolidinethiones and 2‐thiozolidinethiones was examined and compared with the catalytic activity of Ru(0) NPs formed in‐situ by the reduction of [Ru(p‐cymene)(Cl)2]2 in presence of optically active ligands such as (S)‐4‐isobutylthiazolidine‐2‐thione, (S)‐4‐Isopropyl‐2(−2‐pyridinyl)‐2‐oxazoline, (8S, 9R)‐(−)‐cinchonidine, (S)‐leucinol, (S)‐phenylalaninol, and (S)‐leucine. Three of the best catalytic systems were then examined for ATH of thirteen aromatic ketones with different electronic and steric properties. A maximum of 24% ee was obtained using NPs generated from the Ru (II) half‐sandwich complex with (S)‐4‐isobutylthiazolidine‐2‐thione in the TH of acetophenone. The NPs were characterized by TEM and DLS measurements. Kinetic studies and poisoning experiments confirmed that the reaction is catalyzed by the chiral NPs formed in‐situ. Complete characterization of the complexes, including the X‐ray crystallographic characterization of two complexes, was also carried out.

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Heterocyclic thiolates and phosphine ligands in copper‐catalyzed synthesis of propargylamines in water

Neshat

Gholinejad

Afrasi

et al. 2021

Applied Organom Chemis

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The product obtained by reaction of deprotonation of 2‐mercaptobenzothiazole or methimazole (2‐mercapto‐1‐methylimidazole) with copper iodide in the presence of tertiary phosphines, PR2R' (R = R' = cyclohexyl; R = R' = phenyl; R = phenyl, R' = methyl) showed high catalytic activity in A3 coupling of a series of aldehydes with phenylacetylene and piperidine, yielding propargylamines. An investigation into the nature of active species carried out mainly by electrospray ionization mass spectrometry (ESI‐MS) techniques underscores a crucial role played by organosulfur and organophosphorus compounds in the generation of active species responsible for these reactions. The coupling reactions were successfully carried out at low catalyst loadings in water/THF (20:1) and in relatively short reaction times. The scope of the reaction was also investigated with 20 examples.

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Synthesis, characterization and DNA interaction studies of new complexes containing 2-mercaptobenzothiazole and different dinitrogen or phosphorous aromatic donors

Cited by 34 publications

References 92 publications

Synthesis of new 4-methylesculetin complexes as anti-neoplastic agents and X-ray structure of dimeric bis-bipyridyl-bis-4-methylesculetinato zinc(II)

Synthesis of new 4-methylesculetin complexes as anti-neoplastic agents and X-ray structure of dimeric bis-bipyridyl-bis-4-methylesculetinato zinc(II)

Asymmetric transfer hydrogenation of ketones using Ru(0) nanoparticles modified by Chiral Thiones

Heterocyclic thiolates and phosphine ligands in copper‐catalyzed synthesis of propargylamines in water

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