Table 2. Optimising the use of unsymmetrical aminating agents ^a .

Entry	Reaction conditions	Yield b (%)
		6	7a
1	10 mol% AgOTf, CH2Cl2, –78 → +20 °C, 2 h	76 c	—
2	10 mol% AgOTf, THF, –78 → +20 °C, 2 h	85	—
3	(1) 10 mol% AgOTf, THF, –78 → +20 °C, 2 h	40	20
	(2) KHMDS (2.0 equiv.), –78 → –40 °C, 2 h
4	(1) 10 mol% AgOTf, THF, –78 → +20 °C, 2 h	0	50
	(2) KHMDS (3.0 equiv.), –78 → –40 °C, 3 h
5	(1) 10 mol% AgOTf, THF, –78 → +20 °C, 2 h	0	72
	(2) KHMDS (3.0 equiv.), –78 → –20 °C, 2 h

^aReactions performed using 0.36 mmol of 4a, 0.36 mmol of 2a in 3.6 ml solvent.

^bIsolated yield.

^cSimilar results obtained with 15 or 20 mol% catalyst.