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The First General Method for the Synthesis of Transition-Metal π Complexes of an Electronically Diverse Family of 1,2-Azaborolyls

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posted on 20.09.2002, 00:00 by Shih-Yuan Liu, Ivory D. Hills, Gregory C. Fu
A general method for the synthesis of new families of transition-metal-free 1,2-azaborolides (3) has been developed, based on a readily available precursor (1). These azaborolides react with a variety of transition-metal electrophiles to produce an unprecedented array of η5-azaborolyl adducts (4) (substituents bound to boron:  nitrogen, oxygen, hydrogen, carbon, and phosphorus).