Reactions of Phosphazines with Primary and Secondary Boranes: Adducts, Rings and Reduction
Abstract
Reactions of (R3PN)2 with electrophilic boranes proceed via B-N adduct while additional borane affords BN2 salts. In marked contrast, the corresponding reactions with more electron rich boranes, Cy2BH or 9-BBN prompts phosphazine reduction, liberating phosphine and borane adducts of diboryl-hydrazines. The mechanistic details of these reactions are elucidated computationally.
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