Radical Addition Followed by Brook-type Rearrangement

3 Radical Addition Followed by Brook-type Rearrangement 

generation of I u.Sri by the action of AIBN which abstracts bromine from a substrate  

addition of the resulting carbon radical to the internal acylsilane moiety at the carbonyl carbon  

irreversible Brook-type rearrangement (radical Brook rearrangement) of the a-si-lylalkoxy radical 164, and 

abstraction of hydrogen from Bu, SnH by the rearranged a-siloxyalkyl radical 165, regenerating Bu3Sn . 

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