A new reduction system: combination of sodium sulfide (sodium hydrosulfide) with phase transfer agent in a two-phase mixture. Reductive debromination ofvic-dibromides to olefins
作者:Juzo Nakayama、Haruki Machida、Masamatsu Hoshino
DOI:10.1016/s0040-4039(00)88080-6
日期:1983.1
A wide variety ofvic-dibromides are debrominated to the corresponding olefins in good to excellent yields are aqueous sodium sulfide or sodium hydrosulfide using tricotylmethylammon chloride as the phase transfer agent in a two-phase mixture.
Amino triphenolate tungsten(VI) complexes have been prepared and they proved to be efficient catalysts in haloperoxidation reactions using hydrogen peroxide as a terminal oxidant and inorganic sources of halides. In particular, interesting results have been obtained in the challenging chloroperoxidation reactivity (catalyst loading down to 0.05% with TONs up to 900). A comparison among three different