Table 2.

Effect of the amount of 1,4-dibromobutane (2a) addition on the yield of the reduction products 3a and 4^a.

Entry	1,4-Dibromobutane (equiv)	Yield of 3a (%)b	Yield of 4 (%)b
1	1.0	36	53
2	1.5	45	40
3	2.0	47	33
4	3.0	28	29
5	5.0	26	24

^aExperimental conditions: cathode, GC plate; anode, Pt plate; electricity, 2.15 F mol⁻¹; current density, 12.7 mA cm⁻²; electrode distance, 40 μm; solvent, THF; substrate, 0.06 M benzylideneaniline (1) and 1,4-dibromobutane (2a); supporting electrolyte, 0.14 M n-Bu₄N∙ClO₄; flow rate, 11 mL h⁻¹ (residence time, 3.9 s). ^bDetermined by HPLC.