Table 3.

Reactions of Michael acceptors with tetrahydroisoquinoline 5.^a

entry	enone	product	time	yieldb (d.r.)c
1	R = Et		4 h	99%
2	R = Ph		2 h	91%
3	R = OMe		1 h	12%d
4	R = H		1 h	96%
5			5 h	93% (2:1 d.r.)
6			72 h	46%d (2:1 d.r.)

^aUnless otherwise noted, reactions were conducted using 2 mol% Ru(bpy)₃Cl₂, 2 equiv of MVK, and 1 equiv of TFA in degassed MeCN (0.25 M) at 50 °C and were irradiated using a 23 W compact fluorescent light bulb at a distance of 30 cm.

^bValues represent the averaged isolated yields of two reproducible experiments unless otherwise noted.

^cDiastereomer ratios determined by ¹H NMR.

^dYield determined by ¹H NMR using an internal standard.