A new, catalytic procedure for the anti-Markownikoff hydration of olefins in the presence of organoborane catalyst and dichloroaluminum hydride under dry air has been described.
(Chloro-phenylthio-methylene)dimethylammonium chloride reacts smoothly with a variety of alcohols, to afford the corresponding alkyl chloride in good yields. In the presence of tetrabuthylammonium bromide the corresponding bromide is obtained. Selective halogenation of primary hydroxyl groups in the presence of an unprotected secondary one is described. The mild reaction conditions involved are compatible
The ability of horseliveralcoholdehydrogenase (HLADH) to the enantioselective oxidation of primary–primary, primary–secondary and primary-tertiary aliphatic 1,5- and 1,6-diols 1a–i was studied. No enantioselectivity of the transformations of primary–primary 1,6-diols 1a–d to ɛ-lactones 4a–d was observed. Regioselective oxidation of primary–secondary 1,6-diols 1e,f and 1,5-diols 1h,i afforded enantiomerically
The Oxidation of Organo‐Boron Compounds Using Electrochemically Generated Peroxodicarbonate
作者:Philipp J Kohlpaintner、Lucas Marquart、Lukas J Gooßen、Siegfried R Waldvogel
DOI:10.1002/ejoc.202300220
日期:——
The deborolative hydroxylation of arenes and alkenes using the green and largely under-explored oxidizer peroxodicarbonate is reported. Accessible through state-of-the-art electrolysis of aqueous carbonate solutions at low temperature and high current density, highly concentrated solutions of this green and sustainable oxidizer lead to a simple and straightforward protocol using only green solvents