Table 4.

Scope studies of crossed cycloadditions involving 7a.

entrya	substrate	cycloadduct	time	yieldb
1	R1 = OTBS		2.5 h	63%
2	R1 = OAc		4 h	91%
3	R1 = Cl		3 h	37%
4	R1 = OH		3 h	74%
5	R1 = NHTs		24 h	74%
6			1.5 h	79%
7			1.5 h	59%
8			24 h	28%
9			24 h	0%
10	R2 = TBSO		2.5 h	88%
11	R2 = BnO		1.5 h	79%
12	R2 = AcO		24 h	0%

^aReactions were irradiated with a 20 W compact fluorescent lightbulb at −15 °C using 0.25 mol% Ru(bpm)₃(BArF)₂, 1 equiv of 1, and 2 equiv of coupling partner.

^bValues reflect the average isolated yields from two reproducible experiments.