Table 2.

Addition of Amines to α-Methyl Allenoate^a

entry	R1	R2	yield (%)b	2	E:Zc
1	Ph	p-Ts	94	2a	2.5:1
2	Bn	p-Ts	94	2b	2.5:1
3	Boc	p-Ts	83	2c	2:1
4	H	p-Ts	53	2d	1:1.75
5	Ph	Boc	0	2e	N/A
6	phthalimide		71	2f	E only
7	TsHN–NH2		57	2g	1.5:1
8			92	2h	1:1.2

^aReactions were performed using 1.1 equiv of the allenoate.

^bIsolated yield.

^cDetermined through ¹H NMR spectroscopic analysis.