SYNTHESE UND THERMISCH INDUZIERTE UMLAGERUNG DER DIARYLBORCHELATE VON N-(2-HYDROXYALKYL)-N,N-DIALKYLAMIN-N-OXIDEN

Article abstract of DOI:10.1016/0022-328X(84)80698-1

Various diarylboron chelates of the cyclic B,N-betaine type (2,7,11) are synthesized from N-(2-hydroxyalkyl)-N,N-dialkylamine-N-oxides (1) and diarylboron reagents.They are rearranged in a thermally induced intramolecular redox reaction, during which the N-oxide is deoxygenated and the borinic acid moiety is oxidized to the state of boronic acid.The rearrangement products 3, 8 and 12 are converted to new B,N-betaine type chelates 5 and 9 by re-chelation with N-oxides (1).