Bolaamphiphiles

Article Abstract:

Bolaamphiphilic molecules contain a hydrophobic skeleton (one, two or three alkyl chains, a steroid, or a porphrin) and two water-soluble groups on both ends. It is stated that attempts to produce circular conformers by intramolecular interactions between alpha and omega headgroup usually failed if the connecting alkyl chains were long.

Alkyl groups, Steroids (Organic compounds), Steroids

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Alpha-amido sulfones as stable precursors of reactive N-acylimino derivatives

Article Abstract:

A preparation method for alpha-amido sulfones by a three-components coupling (aldehyde, amide or carbamate, and sulfuric acid or its salt) is described. A growing number of asymmetric catalytic processes using chiral catalysts utilize alpha-amido sulfones as N-acylimino equivalents for the preparation of optically active amines.

Italy, Sulfolane, Sulfones, Nucleophilic reactions

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Advances in the chemistry of dipyrrins and their complexes

Article Abstract:

The classification, isolation, characterization, biological activity and total syntheses of dipyrrin natural products with maleic anhydride structure and the structure modifications are reviewed. Natural products with maleic anhydride mentioned in the review have distinctive activities in biology.

All Other Basic Inorganic Chemical Manufacturing, Boron & Compounds, Cyclic crudes and intermediates, Industrial inorganic chemicals, not elsewhere classified, Maleic Anhydride, Boron compounds

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