Tough recyclable polyacetals Cyclic acetals such as dioxolane are appealing building blocks for plastics but have proven to be difficult polymerize controllably. Abel et al . show that optimal pairing of a bromomethyl ether and indium or zinc Lewis acid produces polydioxolane with high tensile strength may advantageous packaging applications. Heating this plastic in strong easily breaks it back...

An efficient synthesis and structural aspects of a novel class of selenium bearing hexa-hosts by the reaction of hexafluorobenzene or hexakis(bromomethyl) benzene with RSe~ ions is demonstrated. However, under identical reaction conditions, our attempts to prepare tellurium analogues by the reaction of RTe (R = Ph or p-CH3C6H4-) with hexafluorobenzene or hexakis(bromomethyl)benzene to obtain (R...

exo-Methylene-β-lactams were synthesized in two steps from commercially available 3-bromo-2-(bromomethyl)propionic acid and reacted with arene diazonium salts a Heck-type arylation the presence of catalytic amounts Pd(OAc)2 under ligand-free conditions. The products, arylidene-β-lactams, obtained high yields as single isomers. β-hydride elimination step Pd-catalyzed coupling reaction proceeds e...

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The tridentate ligand 2,6-bis(3,5-diphenylpyrazol-1-ylmethyl)pyridine, abbreviated as 2,6-[(3,5-ph₂pz-CH₂)₂-py], a new pyridine-pyrazole derivative, was prepared from 2,6-bis(bromomethyl)pyridine and 3,5-diphenylpyrazole. The ligand was characterized by means of elemental analyses, ATR-IR, ¹H- and ¹³C-NMR spectroscopy and single crystal X-ray crystallography. Using this ligand, a new mononuclea...

In this note, we report the discovery of a novel pyridinium chlorochroamte-catalyzed process in which an α-bromomethyl-tetrahydrofuran bond was oxidatively cleaved to give a γ-lactone functionality. The title compound was synthesized from a C15 polybrominated acetogenin compound, isolated from the marine sponge Mycale rotalis, by benzoylation followed by pyridinium chlorochromate-catalyzed oxid...