Protodeboronation of arylboronic acids and triarylboroxines in Bu20/THF
摘要:
The arylboron compounds Ph3B3N3Me3, Ar3B3O3, or ArB(OH)2 (Ar = Ph, p-BrC6H4, p-MeC6H4, m-NH2C6H4) react with [Cr(CO)6] in refluxing Bu2O/THF (9:1) to afford the (eta6-arene)tricarbonyl-chromium(0) complexes of the protodedoronated substrates in yields of up to 55%. The proposed mechanism involves protodeboronation of the arylboron compound followed by complexation of the free arene by the chromium carbonyl moiety.