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Silica-Bonded N-Propylpiperazine Sodium n-Propionate as Recyclable Basic Catalyst for Synthesis of 3,4-Dihydropyrano[c]chromene Derivatives and Biscoumarins（图）
silica-bonded N-propylpiperazine sodium n-propionate silica-bonded N-propylpiperazine methyl n-propionate aromatic aldehydes 3,4-dihydropyrano[c]chromenes biscoumarins
2013/10/4
A simple and efficient procedure for the preparation of silica-bonded N-propylpiperazine sodium n-propionate (SBPPSP) by the hydrolysis of silica-bonded N-propylpiperazine methyl n-propionate (SBPPMP)...