760-55-4

Usage

InChI:InChI=1/C11H20O4/c1-2-3-4-5-6-7-8-9(10(12)13)11(14)15/h9H,2-8H2,1H3,(H,12,13)(H,14,15)

Upstream product

• 1472-85-1 diethyl octylmalonate 
• 629-27-6 1-Iodooctane 
• 105-56-6 ethyl 2-cyanoacetate 
• 13051-39-3 1,1,1-tris(ethoxycarbonyl)nonane 
• 110-38-3 decanoic acid ethyl ester 
• 95-92-1 oxalic acid diethyl ester 
• 26526-77-2 ethyl 2-cyanodecanoate 
• 111-83-1 1-bromo-octane 
• 105-53-3 diethyl malonate 
• 334-48-5 1-decanoic acid 
• 124-38-9 carbon dioxide 
• 111-66-0 oct-1-ene 

Downstream Products

• 334-48-5 1-decanoic acid 
• 6048-82-4 decanophenone 
• 16424-31-0 5-oxotteradecanoic acid 
• 22089-87-8 1-Phenyl-undecan-dion-(1,2) 
• 112-05-0 nonanoic acid 
• 34634-92-9 2-oxoundecanoic acid 

Relevant academic research and scientific papers

Preparation of mono-substituted malonic acid half oxyesters (SMAHOs)

The use of mono-substituted malonic acid half oxyesters (SMAHOs) has been hampered by the sporadic references describing their preparation. An evaluation of different approaches has been achieved, allowing to define the best strategies to introduce diversity on both the malonic position and the ester function. A classical alkylation step of a malonate by an alkyl halide followed by a monosaponification gave access to reagents bearing different substituents at the malonic position, including functionalized derivatives. On the other hand, the development of a monoesterification step of a substituted malonic acid derivative proved to be the best entry for diversity at the ester function, rather than the use of an intermediate Meldrum acid. Both these transformations are characterized by their simplicity and efficiency, allowing a straightforward access to SMAHOs from cheap starting materials.

Counterion-Dependent Access to Low-Symmetry Lyotropic Sphere Packings of Ionic Surfactant Micelles

The water-driven self-assembly of homologous dianionic surfactants into lyotropic liquid crystals (LLCs) is investigated, with a focus on understanding how surfactant headgroup and counterion identities guide supramolecular spherical mesophase selection. Using temperature-dependent small-angle X-ray scattering (SAXS), we demonstrate that 2-alkylmalonate surfactants (CnMal-M2) with n = 8 (octyl) or 10 (decyl) and M = K+, Cs+, or (CH3)4N+ form both simple and complex micelle packings. Observed spherical morphologies include body-centered cubic (BCC), hexagonally closest-packed (HCP), and tetrahedrally closest-packed Frank-Kasper (FK) A15 and σ phases (Pm3(-)n and P42/mnm symmetries, respectively). Previously observed in only one other minimally hydrated surfactant, the σ phase is a rare LLC morphology comprising a low-symmetry unit cell containing 30 sub-2-nm quasispherical micelles, each of which belongs to one of five symmetry-equivalent classes with discrete aggregation numbers. Temperature versus water concentration phase maps for CnMal-M2 LLCs reveal that σ-phase formation depends sensitively on the size and polarizability of the surfactant counterion and the length of the surfactant alkyl tail. These observations are rationalized in terms of a delicate interplay between global packing symmetry and local particle symmetry, and the extent to which counterion-headgroup correlations enforce the latter structures in these LLC phases.

TRANSPORT DES CATIONS A TRAVERS DES MEMBRANES LIPIDIQUES BIMOLECULARES PAR DES NOUVEAUX MACROCYCLES DI ET TETRAESTERS POLYETHERES HYDROPHOBES

New hydrophobic polyether tetraesters substituted with carbon chains at C8 and C12 have the ability to transport selectively, but not very efficiently, the K(1+) and NH4(1+) ions.