of aryl cyanides with diboron in the presence of a rhodium/Xantphos catalyst and DABCO affords arylboronic esters via carbon-cyano bond cleavage. This unprecedented mode of reactivity for a borylrhodium species allows the regioselective introduction of a boryl group in a late stage of synthesis.
Organoboron compounds. Part VI. Photochemical reactions of aryl and alkyl halides with boron halides
作者:R. A. Bowie、O. C. Musgrave
DOI:10.1039/j39660000566
日期:——
The photolysis of aryl iodides in the presence of boron halides results in the formation of arylboron dihalides and diarylboron halides by free-radical substitution reactions. Hydrolysis of the products gives the corresponding boronic and borinic acids. Alkyl iodides and di-iodo-compounds behave in a similar manner. The photolysis and subsequent hydrolysis of mixtures of bromo- or chloro-benzene with