Stannanes dehalogenation

Reagent for Polarity Reversal Catalysis in Radical Reactions. Polarity reversal catalysis (PRC) has been established by Roberts in free-radical chemistry as an efficient alternative to the use of stannanes (e.g., tri-/>butylstannane) and their associated toxicity and purification problems. Silyl radicals can be a valid alternative to tin radicals for one of the most common radical reactions, that is, radical dehalogenation, but silanes, contrary to stannanes, cannot sustain an effective radical chain reaction, due to the stronger Si-H bond. 

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