Why is this R? When I compare the carbons directly attached to the chiral carbon I see:
(for the benzene pathway)
C-C-C
total weight = 36
vs.
C-H2-N
total weight = 28
Wouldn't this mean the benzene substituent has higher priority making the configuration S???
Edit: never mind, it is so because N is a higher atomic number than C. Guess the weight only matters if the carbon doesn't have a higher atomic number atom attached to it.