Table 2.

Testing the developed ligand library in [3 + 2] annulation of MBH carbonate

Entry	Ligand	12
		Yield (%)	e.e. (%)	dr
1	MOP	trace	N.D.	N.D.
2	L7	trace	N.D.	N.D.
3	L8	92	67	>25:1
4	L9	40	84	>25:1
5	L10	98	83	>25:1
6	L11	93	94	>25:1

Reaction conditions: 10 (0.1 mmol), 11 (0.12 mmol), 20 mol% L*, 1.0 mL toluene, room temperature, 22 h, under argon. Yields are those of isolated products.