Table 1.

Chemoselective Aziridination and C–H Amination of Homoallenic Carbamates Catalyzed by Silver Catalysts

entrya	catalystb,c	d	4a	5a	entrye		4b	5b
1	Rh2(esp)2		35%	17%	9		5%	80%
2	AgOTf/phen		79%	---	10		80%	14%
3	AgOTf/bipy		60%	---	11		68%	11%
4	AgOTf/bathophen		57%	---	12		84%	12%
5	AgOTf/p-MeObipy		72%	---	13		73%	11%
6	AgOTf/dafone		32%	---	14		59%	22%
7	AgOTf/p-Ph-bipy		66%	---	15		62%	20%
8	AgOTf/terpy		27%	35%	16		9%	61%

^aSubstrate 3a.

^b5 mol % Rh₂(esp)₂, 2 equiv PhlO.

^cAg: 20 mol % AgOTf, 25 mol % ligand, 2 equiv PhIO, 4 Å MS, CH₂Cl₂.

^dA: aziridination. I: insertion.

^eSubstrate 3b.