Table 1.

Amination of Benzaldehyde (1a) with Pentafluorophenyl Azide (2a) Catalyzed by [Co(Por)]^a

entry	catalyst	temp (°C)	solvent	yield (%)b
1	[Co(P1)]	80	PhH	56
2	[Co(P1)]	80	PhCl	77
3	[Co(P1)]	80	4-CF3C6H4Cl	71
4	[Co(P1)]	80	PhF	56
5	[Co(P1)]	80	hexane	69
6	[Co(P1)]	80	ClCH2CH2Cl	65
7	[Co(P1)]	40	PhCl	trace
8	[Co(TPP)]	80	PhCl	trace
9	-	80	PhCl	NRc

^aAll reactions were carried out with 1.0 equiv. of aldehyde (0.2 M) and 1.2 equiv. of azide using 3 mol % [Co(Por)] as catalyst.

^b19F-NMR yields.

^cNR = no reaction.