A Remarkably Efficient Phase-Transfer Catalyzed Amination of α-Bromo-α, β-Unsaturated Ketones in Water

Table 1

II catalyzed aziridination of 1a–c with amines (Scheme 5) and 2a–g to give structures 3a–g, 4a–g, and 5a–f, respectively, in H₂O at room temperature.

Entry	Amines	Time (h)	Products and yields (%)
			3	4	5
1.		2
2.		3
3.		1.5			2
4.		1	4	5	6
5.		1	8	9
6.		1
7.		4			—
8.			—	—	—
9			—	—	—
10.			—	—	—
11.			—	—	—
12.			—	—	—