Table 2.

Half-wave potential values E^I_1/2 and E^II_1/2 of 2-acyl-3-aminophenylnaphthoquinones 16-28.

Product no.	R	−EI1/2 (mV)	−EII1/2 (mV)
16	C3H7	790	1180
17	C5H11	875	1295
18	4-MeOPh	815	1190
19	2,5-(OMe)2Ph	845	1165
20	2-Furyl	620	1125
21	2-Thienyl	775	1165
22	CH3	890	1410
23	C3H7	685	1180
24	C5H11	755	1230
25	4-MeOPh	720	1225
26	2,5-(OMe)2Ph	760	1225
27	2-Furyl	710	1200
28	2-Thienyl	700	1205