(NH₄)₂CO₃-promoted GT reaction of cyanoacetamide with 1,3-dicarbonyls^a.

Entry	R	R1	Product	Time (h)	Isolated yield (%)
1	CH3	OEt		3	97
2	CH3	OMe		2.5	96
3	CH3	O-tBu		5	91
4	Ph	OEt		3	95
5	CF3	OEt		1.5	94
6	CH2Cl	OEt		6	78
7	n-Propyl	OEt		3	80
8	Me	Me		1.5	95
9	Me	Ph		1	95
10	CF3			1.5	93
11	CF3	Me		1	97

^aReaction conditions: cyano-acetamide (1 mmol), 1,3-dicarbonyl (1 mmol), (NH₄)₂CO₃ (1 mmol), H₂O : EtOH (1 : 1, v/v), 80 °C.