Mesoporous AlPO4: A Highly Efficient Heterogeneous Catalyst for Synthesis of 5-Substituted 1H-Tetrazoles from Nitriles and Sodium Azide via [3 + 2] Cycloaddition
https://www.jstage.jst.go.jp/article/cl/41/8/41_CL-120272/_pdf
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Mesoporous AlPO4: A Highly Efficient Heterogeneous Catalyst for Synthesis of 5-Substituted 1H-Tetrazoles from Nitriles and Sodium Azide via [3 + 2] Cycloaddition
https://www.jstage.jst.go.jp/article/cl/41/8/41_CL-120272/_pdf