The synthesis of 2-substituted benzazepinones^a.

Entry	R1	R2	R3	Time (min)	3	Yield (%)
1	H	Allyl	Me	30	3a	85
2	H	Allyl	Et	30	3b	83
3	H	Allyl	i-Pr	15	3c	86
4	H	Allyl	Cy	15	3d	80
5	H	Allyl	Allyl	15	3e	75
6	H	Allyl	Ph	15	3f	88
7	Me	Allyl	Me	20	3g	88
8	Me	Allyl	Allyl	45	3h	76
9	Cl	Allyl	Me	60	3i	84
10	Cl	Allyl	Allyl	60	3j	78
11	H	H	Me	20	3k	38

^aUnless indicated otherwise, the reaction was carried out on 0.5 mmol scale in DCM (5 mL).