Linked Life Data

12948207

Source:http://linkedlifedata.com/resource/pubmed/id/12948207

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
15
pubmed:dateCreated
2003-9-1
pubmed:abstractText
New 30-membered achiral and chiral polyaza macrocyclic ligands, L1 and L2 were synthesized directly from [3 + 3] condensation of phthalic dicarboxaldehyde with cis- and (1R,2R)-diaminocyclohexane, respectively. The trimeric macrocyclic structures were confirmed by electrospray ionization mass spectrometry (ESI-MS), 1H NMR, 13C NMR spectroscopy and elemental analysis. Potentiometry was used to determine the protonation constants of the ligands. UV-vis spectrophotometric titration was employed to investigate the coordination and conformational properties of the chiral ligand (L2). Direct enantioselective aldol reaction has been successfully performed using 4-nitrobenzaldehyde and acetone in the presence of the chiral macrocycle and its zinc(II) complexes as catalysts.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Aug
pubmed:issn
1477-0520
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2795-800
pubmed:year
2003
pubmed:articleTitle
Self-assembly of achiral and chiral macrocyclic ligands: synthesis, protonation constants, conformation and asymmetric catalysis.
pubmed:affiliation
Department of Chemistry, Texas A & M University, College Station, Texas 77843-3255, USA.
pubmed:publicationType
Journal Article