Table 1.

Carboamination reactions catalyzed by imidozirconocenes 14. ^[a]

Entry	Starting Imine	Alkyne	Catalyst	Product	Yield [%][b]
1	15 a; X1 =CH3; X2 =4-CH3	16 a; Ar =Ph	14 a	17 a	71
2	15 b; X1 =CH3; X2 =4-OCH3	16 a; Ar =Ph	14 a	17 b	71
3	15 c; X1 =CH3; X2 =4-N(CH3)2	16 a; Ar =Ph	14 a	17 c	82
4	15 d; X1 =OCH3; X2 =H	16 a; Ar =Ph	14 c	17 d	80
5	15 e; X1 =OCH3; X2 =4-CH3	16 a; Ar =Ph	14 c	17 e	80
6	15 f; X1 =OCH3; X2 =3-CH3	16 a; Ar =Ph	14 c	17 f	85
7[c]	15 a; X1 =CH3; X2 =4-CH3	16 b; Ar =4-OCH3C6H4	14 b	17 g	58

^[a]Reaction is conducted with 10 mol% azazirconacyclobutene 14 (with appropriate X¹ and Ar substitution) as catalyst and imine 15 and alkyne 16 at 0.5m in C₆D₆.

^[b]Yield of isolated product after chromatography.

^[c]Reaction was conducted at 160°C using a 3:1 mixture of 14 c:16 b.