An Efficient Protocol for the Synthesis of Quinoxaline Derivatives at Room Temperature Using Recyclable Alumina-Supported Heteropolyoxometalates

Table 6

Preparation of quinoxalines using AlCuMoVP as catalyst.

Entry	1,2-Diamine	1,2-Diketone	Product	Time (min)	Yield^a (%)
1				120	92
2				100	90
3				180	88
4				180	87
5				1200	68
6				240	76
7				120	91
8				180	87
9				180	87

Reaction conditions: molar ratio of substrates: (1 : 1); catalyst: 100 mg. Reactions were run at 25°C. ^aIsolated yield.