R

A (%)

B (%)

C (%)

D (%)

C6H5

45

20

12

10

p-C6H4-CH3

46

0

0

14

C6H9

20

0

28

26

CH2C6H5

40

0

30

13

Table 1: Observed product distributions upon electrolyses (Eapp = -650 mV vs Ag/-AgCl) of each alkyne in the presence of organoiridium compound 1.