| 1. |
- Liu, Hai-Bin, et al.
(author)
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Synthesis of 3-aryl-5-t-butylsalicylaldehydes and their chiral Schiff base compounds
- 2007
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In: Synthetic Communications. - : Informa UK Limited. - 0039-7911 .- 1532-2432. ; 37:19-21, s. 3815-3826
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Journal article (peer-reviewed)abstract
- Six meta-substituted salicylaldehyde compounds have been prepared in 68-90% yields by the Suzuki-Miyaura coupling reaction using 3-bromo-5-t-butylsalicylaldehyde (la) and arylboronic acids (2a-f) as reactants. Among the obtained products, 3-(4-fluorophenyl)-5-t-butylsalicylaldehyde (3b), 3-(4-methylphenyl)-5-t-butylsalicylaldehyde (3d), 3-(1-naphthyl)-5-t-butylsalicylaldehyde (3e), and 3-(2-naphthyl)-5-t-butylsalicylaldehyde (3f) have not been reported so far. A series of new Schiff base ligands (L1-L10) were obtained in 51-89% yields from these salicylaldehyde derivatives.
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| 2. |
- Tullberg, Erik, et al.
(author)
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Convenient synthesis of benzene-1,3,5-tricarbaldehyde and congeners
- 2007
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In: Synthetic Communications. - : Informa UK Limited. - 0039-7911 .- 1532-2432. ; 37:1-3, s. 237-245
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Journal article (peer-reviewed)abstract
- A convenient synthesis of benzene-1,3,5-tricarbaldehyde was developed as well as benzaldehyde derivatives carrying one or two latent aldehyde groups. The asymmetric derivatives may serve as versatile scaffolds for the synthesis of sectorial dendrimers and multifunctional molecules.
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| 3. |
- Zhang, Wei, et al.
(author)
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Practical synthesis of new beta-diketone-connected bipyridine and its conversion to pyrazole-centered bipyridine ligand
- 2007
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In: Synthetic Communications. - : Informa UK Limited. - 0039-7911 .- 1532-2432. ; 37:19-21, s. 3393-3402
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Journal article (peer-reviewed)abstract
- Two new polydentate ligands, 1-(6-hydroxymethyl-2-pyridyl)-3-(2-pyridyl)-propane-1,3-dione (6) and 1,3-bis(6-hydroxymethyl-2-pyridyl)-propane-1, 3-dione (8), have been synthesized starting from 2,6-pyridinedicarboxylic acid by conventional esterification, reduction, and condensation reactions. They were further converted to two new polydentate ligands, 3-(6-hydroxymethyl-2-pyridyl)-5-(2-pyridyl)-1H-pyrazole (7) and 3,5-bis(6-hydroxymethyl-2-pyridyl)-1H-pyrazole (9), by reaction with hydrazine hydrate. These four compounds were characterized by proton nuclear magnetic resonance (H-1 NMR), electrospray ionization-mass spectrum (ESI-MS), infrared spectrum (IR), and elemental analyses. The structure of 9 was also determined by X-ray diffraction.
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