4484-61-1Relevant articles and documents
Transition metal complexes-catalyzed synthesis of 2,4,7,9- tetraoxadecane and homologs
Fontaine,Piette,Noels,Beaujean,Detry
, p. 3153 - 3156 (1998)
Polyether molecules are readily available from cheap acetals with a catalyst system based on ruthenium and tin(II) chloride. As a model reaction 1,3-dioxolane 2 reacts with dimethoxymethane 3 to yield 78% of 2,4,7,9- teetraoxadecane 1.
Iridium-catalysed allylic substitution: Stereochemical aspects and isolation of IrIII complexes related to the catalytic cycle
Bartels, Bjoern,Garcia-Yebra, Cristina,Rominger, Frank,Helmchen, Guenter
, p. 2569 - 2586 (2007/10/03)
Ir-catalysed allylic alkylations of enantiomerically enriched monosubstituted allylic acetates proceed with up to 87% retention of configuration using P(OPh)3 as ligand. High retention enantioselectivity of up to 86% ee in asymmetric allylic alkylations of achiral or racemic substrates is achieved with monodentate phosphorus amidites as ligands. Lithium N-tosylbenzylamide was identified as a suitable nucleophile for allylic aminations. Of particular importance is the use of lithium chloride as an additive, generally leading to increased enantioselectivities. Two (π-allyl)IrIII complexes were characterised by X-ray crystal structure analysis and spectroscopic data.
Organotin-containing composition for the stabilization of polymers of vinyl chloride
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, (2008/06/13)
An organotin-containing composition for the stabilization of polymers or copolymers of vinyl chloride in which there is incorporated a stabilizing amount of an organotin compound containing at least two tin atoms and which is a mercapto, hydroxy or alkoxy substituted ester of a mercapto acid substituted organotin mercapto acid diester.
SYNTHESE ELECTROCHIMIQUE DE METHOXY-2 DIOXA-1,4 CYCLANES PAR OXYDATION ANODIQUE DE CETALS CYCLIQUES DE β-CETO-CARBOXYLATES
Lelandais, Daniel,Bacquet, Cathy,Einhorn, Jacques
, p. 3131 - 3134 (2007/10/02)
Anodic oxidation of β-oxocarboxylate cyclic acetals in anhydrous methanol gives 2-methoxy-1,4-dioxacycloalkanes in 40-60percent yields. The mechanism is discussed.
