Indolenine-based croconaines are synthesized, their structure and solid state organization are investigated together with their electronic properties in thin-film transistors.

Metal cations (Mn(2+) or Ca(2+)) in aqueous dispersions of mixtures of dioleoylphosphatidylethanolamine (DOPE) and poly(ethylene glycol)-functionalized DOPE (DOPE-PEG(350)) induce, above a certain amount of the PEG lipid component, a phase transition from the inverted hexagonal phase H(II) to the bicontinuous inverted cubic phase Q(224) with space group Pn3m. The process is driven by the decrease of free elastic energy due to the Gaussian curvature of the cubic phase. The structural characterization of the phase behavior over the whole explored range of DOPE-PEG/DOPE weight ratio (3-25%) is reported, focusing on the role of the metal cation in the formation of the 3D cubic lattice. This result may represent a significant progress toward a design-based approach to drug delivery.

Lithiated 2-(1-chloroethyl)-4,4-dimethyl-2-oxazoline 7 adds to electron-poor alkenyl heterocycles to afford substituted cyclopropanes in excellent yields. A route to chiral nonracemic heterosubstituted cyclopropanes, starting from optically active 2-chloromethyl-2-oxazolines, is highlighted as well.

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