. 2021 Feb 2;7(2):e06113. doi: 10.1016/j.heliyon.2021.e06113

Table 1.

Optimizing the CA reaction in order to generate 9a.

Entry	catalyst	Solvent	Yield (%)	Time (h)
1	CuSO₄	DMSO^a	70	24
2	CuSO₄	DMSO-Water^a	94	15
3	CuSO₄	Water^b	65	20

1,4-triazole as a regioselective cycloadducts.

a mixture of 1,5- and 1,4- triazole cycloadducts.