| 1. |
- Liu, Hai-Bin, et al.
(author)
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Synthesis of Tri- and Disalicylaldehydes and Their Chiral Schiff Base Compounds
- 2010
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In: Synthetic Communications. - : Informa UK Limited. - 0039-7911 .- 1532-2432. ; 40:7, s. 1074-1081
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Journal article (peer-reviewed)abstract
- A suitable procedure for convenient preparation of 1,3,5-tris(4-hydroxy-5-formylphenyl)benzene (6) was exploited via 5-bromosalicylaldehyde as starting reactant. Among the obtained products, compound 6, 4-methoxy-3-formylphenylboronic acid (9), 1,3,5-tris(4-methoxy-5-formylphenyl)benzene (10), and 4-methoxy-4'-hydroxyl-3,3'-diformyl-1,1'-diphenyl (11) had not been reported previously. Two new chiral Schiff base ligands, L1 and L2, were obtained from the tri- or disalicylaldehydes.
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| 2. |
- Wang, Ying, et al.
(author)
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Synthesis of New Chiral Schiff Bases Containing Bromo- and Iodo-Functionalized Hydroxynaphthalene Frameworks
- 2011
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In: Synthetic Communications. - : Informa UK Limited. - 0039-7911 .- 1532-2432. ; 41:9, s. 1381-1393
-
Journal article (peer-reviewed)abstract
- [image omitted] Two series of chiral Schiff bases 3a-g and 4a-g containing bromo- and iodo-functionalized hydroxynaphthalene frameworks were conveniently prepared in acceptable to moderate yields by controlled halogenation of hydroxynaphthaldehyde and then condensation of the corresponding mono-, di-, and trihalohydroxynaphthaldehyde with the chiral amino alcohol. Except for 4d, the Schiff bases 3a-g, 4a-c, and 4e-g prepared in the present work have not been reported in literature so far, and they might be used as effective chiral inducers in some asymmetrically synthetic reactions.
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