scheme 2.
Substrate scope for meta bromination. Yields are those of isolated products. [a] Average of three runs. [b] Average of two runs. [c] Yield without ruthenium catalyst is 10 %. NBS=N-bromosuccinimide.
Substrate scope for meta bromination. Yields are those of isolated products. [a] Average of three runs. [b] Average of two runs. [c] Yield without ruthenium catalyst is 10 %. NBS=N-bromosuccinimide.