Table 1.

Reaction of β-enaminodiketone 1 with aromatic amidines 2–4.

Entry	Amidine	Product	Yield (%)a
1b	2	5	80
2b	3	6	86
3c	4	7	56

^aIsolated yield. ^bIdeal condition = 0.5 h. ^cIdeal condition = 1 h.